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(+/-)-2-乙酰基-9-氮杂双环[4.2.1]-2-富马酸壬酯 | 64285-06-9

中文名称
(+/-)-2-乙酰基-9-氮杂双环[4.2.1]-2-富马酸壬酯
中文别名
鱼腥藻毒素;(±)-富马酸无毒素A;限制进口
英文名称
anatoxin-a
英文别名
(-)-Anatoxine A;Anatoxin A;1-[(1R,6R)-9-azabicyclo[4.2.1]non-2-en-2-yl]ethanone
(+/-)-2-乙酰基-9-氮杂双环[4.2.1]-2-富马酸壬酯化学式
CAS
64285-06-9
化学式
C10H15NO
mdl
——
分子量
165.235
InChiKey
SGNXVBOIDPPRJJ-PSASIEDQSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

物化性质

  • 比旋光度:
    D25 +39.8°
  • 沸点:
    293.09°C (rough estimate)
  • 密度:
    1.0203 (rough estimate)
  • 颜色/状态:
    Oil
  • 溶解度:
    In water, 7.2X10+4 mg/L at 25 °C (est)
  • 蒸汽压力:
    5.8X10-3 mm Hg at 25 °C (est)
  • 分解:
    When heated to decomposition it emits toxic fumes of nitrogen oxides.
  • 解离常数:
    pKa = 9.4

计算性质

  • 辛醇/水分配系数(LogP):
    0.8
  • 重原子数:
    12
  • 可旋转键数:
    1
  • 环数:
    2.0
  • sp3杂化的碳原子比例:
    0.7
  • 拓扑面积:
    29.1
  • 氢给体数:
    1
  • 氢受体数:
    2

ADMET

代谢
颤藻PCC 6506是一种产生强效神经毒素Anatoxin-a和homoanatoxin-a的蓝藻。该菌株的基因组测序正在进行中,并且已经识别出了一个含有被称为ks2 t的序列的29 kb DNA片段,此前已经显示这个序列对产生Anatoxin-a和homoanatoxin-a的颤藻蓝藻具有特异性。对这个29 kb片段的生物信息学分析揭示了一个基因簇,并对其进行了注释。从anaA到anaH的八个连续基因产物的功能为Anatoxin-a和homoanatoxin-a的生物合成提供了线索。脯酸首先被装载到酰基载体蛋白上,其五元环被氧化到吡咯啉氧化态。这个活化的环随后依次装载到三个聚酮合酶模块上进行延伸、还原、环化和甲基化。最后一步是酯的解和随后的脱羧。使用标记前体由PCC 6506产生的homoanatoxin-a的GC-MS和NMR分析证实,脯酸很可能是这些聚酮合酶的起始物质。特定的PCR扩增显示,在产生Anatoxin-a和homoanatoxin-a的蓝藻基因组中总是存在anaC、anaE、anaF和anaG基因,而在不产生毒株中则不存在。带有组酸标签的AnaC被纯化到均一性,并显示能够催化脯酸装载到之前使用枯草杆菌Sfp磷酸泛酰基转移酶转化为其全酶形式的带有组酸标签的AnaD上。所有这些数据都提供了强有力的证据,证明负责颤藻PCC 6506产生Anatoxin-a和homoanatoxin-a的基因簇已经被识别。
Anatoxin-a and homoanatoxin-a are potent neurotoxins produced by cyanobacteria such as Oscillatoria PCC 6506. Sequencing of the genome of this strain is underway, and ... a 29 kb DNA fragment containing a sequence called ks2 t... previously shown to be specific to Oscillatoria cyanobacteria producing anatoxin-a and homoanatoxin-a /was identified/. Bioinformatic analysis of this 29 kb fragment revealed a cluster of genes, which were annotated. The function assigned to the products of eight contiguous genes, from anaA to anaH, provides a clue to the biosynthesis of anatoxin-a and homoanatoxin-a. Proline is first loaded on an acyl carrier protein and its five-membered cycle oxidized to the pyrroline oxidation state. This activated ring is then successively loaded on three polyketide synthase modules for elongation, reduction, cyclization, and methylation. The final step is the hydrolysis of the thioester with subsequent decarboxylation. GC-MS and NMR analyses of homoanatoxin-a produced by PCC 6506 using labeled precursors confirm that proline is very likely the starter of these polyketide synthases. ... Specific PCR amplifications ... showed that the anaC, anaE, anaF, and anaG genes are always present in the genome of cyanobacteria producing anatoxin-a and homoanatoxin-a and absent in nonproducing strains. Histidine-tagged AnaC was purified to homogeneity and showed to catalyze the loading of proline on purified histidine-tagged AnaD that had been previously transformed into its holo form using the Bacillus subtilis Sfp phosphopantetheinyl transferase. All of these data provide strong evidence that ... the gene cluster responsible for the production of anatoxin-a and homoanatoxin-a in Oscillatoria PCC 6506 /has been identified/.
来源:Hazardous Substances Data Bank (HSDB)
毒理性
  • 毒性总结
识别和使用:鱼毒素A是一种油。鱼毒素A是由几种淡蓝藻产生的一种神经毒素,与家畜和野生动物的致命中毒有关。人体研究:一名青少年在充满有毒蓝藻膜的池塘中摔跤和潜后,因暴露于蓝绿色藻类毒素而死亡。蓝藻细胞在粪便样本中被发现,毒素在藻膜样本中被测量到。这名青少年和他的朋友都出现了严重的呕吐、腹泻和腹痛。在受影响较严重的人身上,这种情况在暴露后48小时以休克和抽搐告终。涉嫌的毒素鱼毒素A是一种快速作用的神经毒素,但没有关于人类接触的数据。虽然神经毒素可能会引起死亡,通过呼吸抑制和抽搐,但它不会预期会导致胃肠炎。动物研究:鱼毒素A是由几种蓝藻属产生的一种强效神经毒素。有报道称,野生动物和家畜因接触鱼毒素A而死亡,这是由神经肌肉接头处乙酰胆碱受体的抑制驱动的有毒反应。随后的神经元去极化导致肌肉细胞过度刺激。在怀孕的第12至14天(器官形成后),每天一次或三次,分别以200或125微克/千克体重的剂量给仓鼠腹腔注射鱼毒素A,在第15天处死母鼠。每天三次的治疗导致所有10窝胎儿中有1窝胎儿畸形(脑积),几乎所有的胎儿都生长迟缓。每天一次的治疗导致生长迟缓。没有观察到母体毒性。鱼毒素A在小鼠睾丸中引起了剂量依赖性的组织病理学变化,如精子管的变性、精原细胞线的细胞间分离、精母细胞在管腔中的脱落、Sertoli细胞的空泡化和精母细胞的丢失。对Salmonella typhimurium TA 1535/pSK1002菌株进行了遗传毒性测试,包括代谢转化和不包括代谢转化。毒素浓度分别为0.25、0.5、1和2微克/毫升。没有代谢转化时,鱼毒素A的最高无效浓度为0.25微克/毫升。在有代谢激活的情况下没有检测到效果。1990年和1991年,狗在饮用苏格兰因什湖沿岸含有底栖蓝藻华的后死亡。受影响动物的中毒迹象和实验室生物测试中提取物的极高神经毒性表明,这是由蓝藻神经毒素引起的急性中毒。神经毒性华主要由底栖Oscillatoria物种组成,这些物种也在中毒狗的胃内容物中被观察到。胃内容物在生物测试中也是神经毒性的,其症状与Oscillatoria华相同。蓝藻生物碱神经毒素鱼毒素A在提取物和中毒狗的胃内容物中被鉴定出来。生态毒性研究:1985年,在加拿大艾伯塔省埃德蒙顿北部约150公里处的一个湖中观察到蝙蝠大量死亡。超过1000只Myotis spp.和灰蝙蝠(Lasiurus cinereus)因饮用湖中的而死于"藻类中毒"。蓝藻华被怀疑是丹麦湖泊在1993年7月和1994年6-7月期间鸟类死亡的原因。鱼毒素A是鱼类免疫细胞的凋亡诱导剂。将17期和25期的蟾蜍胚胎(Bufo arenarum)暴露于0.03-30.0毫克/升的鱼毒素A,持续10天。不良影响包括剂量依赖性的短暂中枢神经系统抑制、肿和失去平衡。最值得注意的是,在高剂量下,两组在暴露后6-13天都出现了100%的死亡率。
IDENTIFICATION AND USE: Anatoxin A is an oil. Anatoxin A is a neurotoxin produced by several freshwater cyanobacteria and implicated in lethal poisonings of domesticated animals and wildlife. HUMAN STUDIES: Teenager who had been wrestling and diving in a pond with a heavy scum of toxic Anabaena flos-aquae died through exposure to blue-green algal toxin. The cyanobacterial cells were found in fecal samples, and toxin was measured in scum samples. The teenager and his friend both suffered severe vomiting, diarrhea, and abdominal pain. In the more severely affected individual, this ended in shock and seizure 48 hr after exposure. The toxin implicated, anatoxin A, is a fast-acting neurotoxin, but there are no data on human exposure. A neurotoxin would not be expected to cause the gastroenteritis, though it could cause death through respiratory inhibition and convulsions. ANIMAL STUDIES: Anatoxin A is a potent neurotoxin produced by several genera of cyanobacteria. Deaths of wild and domestic animals due to anatoxin-a exposure have been reported following a toxic response that is driven by the inhibition of the acetylcholine receptors at neuromuscular junctions. The consequent neuron depolarization results in an overstimulation of the muscle cells. Doses of 200 or 125 ug/kg bw anatoxin A were given i.p. to hamsters one or three times per day, respectively, at days 12 to 14 of pregnancy (after organogenesis), and the dams were sacrificed at day 15. The treatment given three times per day caused fetal malformation (hydrocephaly) in all fetuses in one of 10 litters, and stunted growth in almost all litters. Treatment given once per day resulted in stunted growth. No maternal toxicity was observed. Anatoxin A caused dose-dependent histopathological changes in the testes of mice such as degenerations in seminiferous tubules, intercellular disassociation of spermatogenetic cell lines, sloughing of germ cells into tubular lumen, vacuolization in Sertoli cells and loss of germ cells. Genotoxicity test was conducted on Salmonella typhimurium TA 1535/pSK1002 strain, with and without metabolic transformation. The toxin concentrations were 0.25, 0.5, 1 and 2 ug/mL. The highest inefficient concentration of anatoxin A without metabolic transformation was 0.25 ug/m. No effects were detected with metabolic activation. Dog deaths occurred in 1990 and 1991 after the animals drank water containing blooms of benthic cyanobacteria along the shoreline of Loch Insh, Scotland. Signs of poisoning in the affected animals and the high neurotoxicity of bloom extracts in laboratory bioassays indicated acute poisoning due to cyanobacterial neurotoxin(s). The neurotoxic blooms consisted largely of benthic Oscillatoria species which were also observed in the stomach contents of the poisoned dogs. Stomach contents were also neurotoxic in bioassays with the same signs of poisoning as the Oscillatoria blooms. The cyanobacterial alkaloid neurotoxin anatoxin A was identified in bloom extracts and poisoned dog stomach contents. ECOTOXICITY STUDIES: A die-off of bats was observed in a lake about 150 km north of Edmonton, Alberta, Canada, in 1985. Over 1000 Myotis spp. and hoary bats (Lasiurus cinereus) died of 'algal poisoning' caused by an alkaloid when they drank water from the lake. Cyanobacterial blooms were implicated in bird kills at lakes in Denmark in July 1993 and June-July 1994. Anatoxin A is an inducer of apoptosis in fish immune cells. Stages 17 and 25 toad embryos (Bufo arenarum) were exposed to 0.03-30.0 mg/L of anatoxin-a for 10 days. Adverse effects included a dose-dependent transient CNS depression, edema and loss of equilibrium. Most notable was the occurrence of 100% mortality at the high dose in both groups 6-13 days post-exposure.
来源:Hazardous Substances Data Bank (HSDB)
毒理性
  • 相互作用
全球的生栖息地中有大约2000种蓝藻(蓝绿色藻类)。它们能够在广泛的环境条件下生存,并且其中一些能够产生强大的毒素。毒素的产生与快速生长期(华)有关,25%-70%的华可能是有毒的。阿纳毒素-a是一种生物碱神经毒素,在尼古丁受体上是一种强烈的神经肌肉阻断剂。食用受污染的后,急性毒性表现为迅速出现的瘫痪、震颤、抽搐和死亡。人类通过娱乐域活动和饮食补充可能会接触到这种毒素,但主要是通过饮用。目前的研究旨在检查产前暴露对产后存活率、生长和神经发育的影响,评估体外胚胎毒性的可能性,并通过口服途径探讨阿纳毒素-a与藻类毒素微囊藻毒素-LR之间的协同关系。还报告了关于两栖动物毒性的初步研究结果。怀孕小鼠在妊娠第8-12天或第13-17天通过腹腔注射接受125或200微克/千克的阿纳毒素-a。在6天的时间里监测幼崽的存活率和体重。在两个处理期间,200微克/千克剂量下的母体毒性(活动能力下降)被观察到。在产后第1天或第6天,对幼崽的存活率或体重没有显著的处理相关影响。妊娠第13-17天的幼崽在产后第6、12和20天进行了标准的神经发育成熟指标评估(正位反射、负地性趋向性和悬挂抓握时间)。没有观察到显著的产后神经毒性。在体外发育毒性评估中,妊娠第8天的小鼠胚胎暴露于0.1-25微米阿纳毒素-a,持续26-28小时。在不存在显著胚胎畸形的背景下,从1.0微米浓度开始就注意到了小鼠卵黄囊血管的扰动。在通过灌胃接受0、500或1000微克/千克微囊藻毒素-LR的小鼠中测试了藻类毒素的协同作用,大约50分钟后,通过同一途径接受0、500、1000或2500微克/千克的阿纳毒素-a。在任何剂量下都没有发生死亡,也没有观察到明确的毒性迹象。将第17和第25阶段的蟾蜍胚胎(Bufo arenarum)暴露于0.03-30.0毫克/升的阿纳毒素-a,持续10天。不良影响包括剂量依赖性的暂时昏迷、肿和平衡失调。最值得注意的是,在两个组别中,高剂量下的死亡率达到了100%,暴露后6-13天。初始暴露与死亡之间的观察到的延迟对于阿纳毒素-a来说是非常不寻常的。
Some 2000 species of cyanobacteria (blue-green algae) occur globally in aquatic habitats. They are able to survive under a wide range of environmental conditions and some produce potent toxins. Toxin production is correlated with periods of rapid growth (blooms) and 25%-70% of blooms may be toxic. Anatoxin-a is an alkaloid neurotoxin that acts as a potent neuro-muscular blocking agent at the nicotinic receptor. Acute toxicity, following consumption of contaminated water, is characterized by rapid onset of paralysis, tremors, convulsions and death. Human exposures may occur from recreational water activities and dietary supplements, but are primarily through drinking water. The current studies were conducted to examine the effect of in utero exposure on postnatal viability, growth and neurodevelopment, to evaluate the potential of in vitro embryotoxicity, and to explore the synergistic relationship between anatoxin-a and the algal toxin microcystin-LR by the oral route. The results of preliminary studies on amphibian toxicity are also reported. Time-pregnant mice received 125 or 200 ug/kg anatoxin-a by intraperitoneal injection on gestation days (GD) 8-12 or 13-17. Pup viability and weight were monitored over a 6-day period. Maternal toxicity (decreased motor activity) was observed at 200 ug/kg in both treatment periods. There were no significant treatment-related effects on pup viability or weight on postnatal day (PND) 1 or 6. The GD 13-17 pups were evaluated on PND 6, 12 and 20 for standard markers of neurodevelopmental maturation (righting reflex, negative geotaxis and hanging grip time). No significant postnatal neurotoxicity was observed. In vitro developmental toxicity was evaluated in GD 8 mouse embryos exposed to 0.1-25 um anatoxin-a for 26-28 hr. Perturbations in mouse yolk sac vasculature were noted from the 1.0 um concentration in the absence of significant embryonic dysmorphology. Potential algal toxin synergism was tested in mice receiving either 0, 500 or 1,000 ug/kg microcystin-LR by gavage and approximately 50 min later receiving either 0, 500, 1,000 or 2,500 ug/kg anatoxin-a by the same route. No deaths occurred at any dose and no definitive signs of intoxication were observed. Stages 17 and 25 toad embryos (Bufo arenarum) were exposed to 0.03-30.0 mg/L of anatoxin-a for 10 days. Adverse effects included a dose-dependent transient narcosis, edema and loss of equilibrium. Most notable was the occurrence of 100% mortality at the high dose in both groups 6-13 days post-exposure. The observed delay between initial exposure and death is highly unusual for anatoxin-a.
来源:Hazardous Substances Data Bank (HSDB)
毒理性
  • 解毒与急救
兽医:对于类毒素-a没有特定的解毒剂。由于临床体征的迅速出现,催吐不太可能有用。尽管没有研究评估特定去污程序的疗效,但建议使用活性炭。此外,人工呼吸可能有益,并配合一般支持性护理。控制癫痫的具体措施包括使用苯二氮卓类药物、苯巴比妥戊巴比妥。如果使用这些药物,它们可能会导致中枢神经系统(CNS)和呼吸抑制,因此需要仔细监测动物。在任何发生癫痫的动物中,控制体温是症状护理的重要部分。
VET: There is no specific antidote for anatoxin-a. Because of the rapid onset of clinical signs, emesis is not likely to be useful. Although there are no studies that evaluate the efficacy of specific decontamination procedures, administration of activated charcoal has been recommended. In addition, artificial respiration may be of benefit along with general supportive care. Specific measures to control seizures include benzodiazepines, phenobarbital or pentobarbital. If given, they may cause central nervous system (CNS) and respiratory depression and careful monitoring of the animal is necessary. In any seizuring animal, control of body temperature is an important part of the symptomatic care.
来源:Hazardous Substances Data Bank (HSDB)
毒理性
  • 解毒与急救
/SRP:/ 立即急救:确保已经进行了充分的中和。如果患者停止呼吸,请开始人工呼吸,最好使用需求阀复苏器、球囊阀面罩设备或口袋面罩,按训练操作。如有必要,执行心肺复苏。立即用缓慢流动的冲洗受污染的眼睛。不要催吐。如果患者呕吐,让患者身体前倾或置于左侧(如果可能的话,头部向下)以保持呼吸道畅通,防止吸入。保持患者安静,维持正常体温。寻求医疗救助。 /毒物A和B/
/SRP:/ Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR if necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Poisons A and B/
来源:Hazardous Substances Data Bank (HSDB)
毒理性
  • 解毒与急救
/SRP:/ 基本治疗:建立专利气道(如有需要,使用口咽或鼻咽气道)。如有必要,进行吸痰。观察呼吸不足的迹象,如有需要,辅助通气。通过非循环呼吸面罩以10至15升/分钟的速度给予氧气。监测肺肿,如有必要,进行治疗……。监测休克,如有必要,进行治疗……。预防癫痫发作,如有必要,进行治疗……。对于眼睛污染,立即用冲洗眼睛。在运输过程中,用0.9%的生理盐(NS)持续冲洗每只眼睛……。不要使用催吐剂。对于摄入,如果患者能吞咽、有强烈的干呕反射且不流口,则用温冲洗口腔,并给予5毫升/千克,最多200毫升的进行稀释……。在去污后,用干燥的无菌敷料覆盖皮肤烧伤……。/毒药A和B/
/SRP:/ Basic treatment: Establish a patent airway (oropharyngeal or nasopharyngeal airway, if needed). Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if needed. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Monitor for shock and treat if necessary ... . Anticipate seizures and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with 0.9% saline (NS) during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 mL/kg up to 200 mL of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool ... . Cover skin burns with dry sterile dressings after decontamination ... . /Poisons A and B/
来源:Hazardous Substances Data Bank (HSDB)

安全信息

  • 海关编码:
    2933990090

SDS

SDS:882e0bfff9844ab1e82fbd7970f871f9
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制备方法与用途

简介

鱼腥藻毒素是从Anabaena jfos-aquae中分离出的一种油性生物碱,属于有毒物质,并被归类为剧毒。其急性毒性通过腹腔注射小鼠实验显示LD₅₀值为0.25毫克/公斤。

此外,该物质具有可燃性危险特性,在燃烧时会产生有毒的氮氧化物烟雾。在储存和运输过程中需要保持库房通风、低温干燥环境。灭火可用二氧化碳、干粉或砂土。

上下游信息

  • 上游原料
    中文名称 英文名称 CAS号 化学式 分子量

反应信息

  • 作为反应物:
    参考文献:
    名称:
    (+)-和(-)-厌氧毒素-a的高效新合成。修订的解决方案,解决了9-甲基-9-氮杂双环[4.2.1] nonan-2-one
    摘要:
    通过与2-氯丙腈的连续碱催化缩合和N-脱烷基化作用,双环酮2(任一对映异构体)均以高收率转化为缩水甘油腈4 。打开环氧化物,然后从所得的α-氯酮中除去HCl,得到烯酮7,该烯酮通过温和的酸解作用转化为抗毒素-a 1。由(+)-和(-)-1形成非对映异构酰胺证明了从(+)-和(-)-2两者均保持手性均一性。但是,发现(+)-2与(+)-1的先验相关性是不正确的:实际上(-)-2给出了(+)-1。
    DOI:
    10.1016/0040-4039(95)01842-6
  • 作为产物:
    参考文献:
    名称:
    通过烯炔复分解对映体(+)-毒素A的对映选择性合成
    摘要:
    有效的n AChR激动剂(+)-毒素-a(1)的简明合成已通过一系列九次化学操作完成,并且可从市售的d-甲基焦谷氨酸(12)中获得27%的总收率。该策略的非对映合成功能的新的协议的应用顺式-2,5-二取代的吡咯烷轴承不饱和侧链和分子内烯炔复分解以提供桥接的双环框架1。因此,焦磷酸谷氨酸甲酯(12)在五个步骤中转化为32,然后进行了简单的烯炔复分解以生成双环二烯33。在33中较少取代的碳-碳双键的选择性氧化裂解,然后脱保护得到的(+)-毒素A(1)。
    DOI:
    10.1016/j.tet.2004.06.021
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文献信息

  • [EN] COMPOUNDS FOR FAST AND EFFICIENT CLICK RELEASE<br/>[FR] COMPOSÉS POUR LIBÉRATION DE CHIMIE CLICK RAPIDE ET EFFICACE
    申请人:TAGWORKS PHARMACEUTICALS B V
    公开号:WO2020256546A1
    公开(公告)日:2020-12-24
    The invention disclosed herein relates to compounds, combinations, kits, and methods using same, for use in bioorthogonal release reactions. In particular, the compounds, combinations and kits of the invention can be used to achieve fast and efficient click release. Applications of the compounds, combinations, and kits of the invention include both in vitro and in vivo applications.
    本发明涉及化合物、组合物、试剂盒及其使用方法,用于生物正交释放反应。特别是,本发明的化合物、组合物和试剂盒可用于实现快速高效的点击释放。本发明的化合物、组合物和试剂盒的应用包括体外和体内应用。
  • [EN] TETRAZINES FOR HIGH CLICK RELEASE SPEED AND YIELD<br/>[FR] TÉTRAZINES POUR UNE VITESSE ET UN RENDEMENT DE LIBÉRATION DE CHIMIE CLIC ÉLEVÉS
    申请人:TAGWORKS PHARMACEUTICALS B V
    公开号:WO2020256544A1
    公开(公告)日:2020-12-24
    Disclosed herein are tetrazines substituted with groups that result in a high click conjugation yield and high click release yields. In some of several other aspects, the invention relates to combinations and kits comprising said tetrazines and a dienophile, preferably a trans-cyclooctene. In another aspect, the compounds, combinations, and kits are for use as a medicament.
    本文揭示了用于高点击共轭产量和高点击释放产量的基团替代的四唑类化合物。在其他几个方面,本发明涉及包括所述四唑类化合物和双亲核烯的组合和试剂盒,其中双亲核烯优选为反-环辛烯。在另一个方面,这些化合物、组合和试剂盒可用作药物。
  • [EN] AGENTS FOR CLEAVING LABELS FROM BIOMOLECULES IN VIVO<br/>[FR] AGENTS PERMETTANT DE CLIVER IN VIVO DES MARQUEURS LIÉS À DES BIOMOLÉCULES
    申请人:TAGWORKS PHARMACEUTICALS B V
    公开号:WO2020256545A1
    公开(公告)日:2020-12-24
    Disclosed herein are compounds comprising trans-cyclooctene moieties, combinations, and kits that can be used to more quickly remove radionuclides from a subject, preferably a human being. Said compounds, combinations and kits can also be used to increase the tumor-to-blood ratio, or to more rapidly and/or conveniently achieve such an increase, of a label in targeted imaging or targeted radiotherapy in a subject, preferably a human being.
    本文所披露的化合物包括顺-环辛烯基团,组合物和套装,可用于更快地从受试者(最好是人)中清除放射性核素。所述化合物、组合物和套装还可用于增加靶向成像或靶向放射治疗中标记物的肿瘤/血液比率,或更快地和/或更方便地实现这种增加,适用于受试者(最好是人)。
  • A short and enantioselective synthesis of (+)-Anatoxin-a
    作者:Peter Somfai、Jens Åhman
    DOI:10.1016/0040-4039(92)80026-g
    日期:1992.6
    A short and enantioselective total synthesis of the neurotoxic alkaloid (+)-Anatoxin-a (1) from the L-pyroglutamic acid derivative 2 is described. The key step involves an intramolecular cyclisation of an N-tosyl iminium ion derived from the corresponding α-methoxy sulfonamide.
    描述了从L-焦谷氨酸生物2的神经毒性生物碱(+)-Anatoxin-a(1)的短而对映选择性的全合成。关键步骤涉及衍生自相应的α-甲氧基磺酰胺的N-甲苯磺酰基亚胺离子的分子内环化。
  • Muscarinic receptor antagonists
    申请人:Aggen James
    公开号:US20090306134A1
    公开(公告)日:2009-12-10
    Disclosed are multibinding compounds which are muscarinic receptor antagonists. The multibinding compounds of this invention containing from 2 to 10 ligands covalently attached to one or more linkers. Each ligand is, independently of each other, a muscarinic receptor antagonist or an allosteric modulator provided that at least one of said ligand is a muscarinic receptor antagonist. The multibinding compounds of this invention are useful in the treatment and prevention of diseases such as chronic obstructive pulmonary disease, chronic bronchitis, irritable bowel syndrome, urinary incontinence, and the like.
    本发明涉及一种多结合化合物,其为肌动蛋白受体拮抗剂。该发明的多结合化合物包含2至10个配体共价连接到一个或多个连接体上。每个配体是独立的,可以是肌动蛋白受体拮抗剂或变构调节剂,但至少其中一个配体是肌动蛋白受体拮抗剂。本发明的多结合化合物在治疗和预防慢性阻塞性肺疾病、慢性支气管炎、肠易激综合征、尿失禁等疾病方面具有用途。
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