When naphthaleneacetic acid was incubated with aspergillus niger, major metabolite was found to be 5-hydroxy analog. 4- and 6-hydroxy analogs were also observed.
When kinnow mandarin fruits were dipped in aq soln of naphthaleneacetic acid, 4 metabolites were formed. Two of these were not identified. Other two, in larger amt, were identified as the Alpha-NAA-aspartate and alpha-naphthylacetyl-beta-d-glucose (na-glucose).
Hydrolysis of the methyl ester of naphthaleneacetic acid was observed during storage of treated potatoes. When winesap and stayman cultivars were exposed to naphthaleneacetic acid ...some decarboxylation occurred and 6 conjugates were formed. Pea roots exposed to NAA produced NAA-aspartate... .
After single oral doses ... /to/ rats, 4 metabolites were found in urine. Two were identified as naphthaceturic acid and naphthacetylglucosiduronic acid. 3rd compound was apparently as a sulfate, indicating possible hydroxylation. The 4th was unidentified.
来源:Hazardous Substances Data Bank (HSDB)
毒理性
副作用
职业性肝毒素 - 第二性肝毒素:在职业环境中的毒性效应潜力是基于人类摄入或动物实验的中毒病例。
Occupational hepatotoxin - Secondary hepatotoxins: the potential for toxic effect in the occupational setting is based on cases of poisoning by human ingestion or animal experimentation.
来源:Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
毒理性
毒性数据
大鼠LC50 > 207,000毫克/立方米
LC50 (rat) > 207,000 mg/m3
来源:Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
The inhibition of wheat coleoptile extension growth by concn of NC 9634 at about 260 muM was completely overcome by 50 uM naphthaleneacetic acid (NAA). Extension growth of intact apple shoots was inhibited by NAA, which was lethal at about 6.25X10-4 M. NC 9634 applied in combination with NAA reduced this growth inhibiting effect and prevented death of shoots sprayed with high auxin concn.
Basic treatment: Establish a patent airway. Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. 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 normal saline 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. Administer activated charcoal ... . /Naphthalene and Related Compounds/
Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious. Start an IV with lactated Ringer's. Adequate hydration must be maintained to prevent renal failure secondary to myoglobinuria unless signs of cerebral or pulmonary edema are present. For hypotension with signs of hypovolemia, administer fluid cautiously. Watch for signs of fluid overload ... . Administer 1% solution methylene blue if patient is symptomatic with severe hypoxia, cyanosis, and cardiac compromise not responding to oxygen. ... . Treat seizures with diazepam ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Naphthalene and related compounds/
After oral administration /0.1-1.0 mg/ ...of (14)C-naphthaleneacetic acid /(14)C-NAA/ to rats ...83-90% ...was excreted in urine, mostly in 24 hr and 3-10% in feces in 48 hr. After larger doses, excretion of (14)C in urine was prolonged and more was excreted in feces. Thus, after dose of about 100 mg /(14)C-NAA/ rat excreted 55% in 24-hr urine, 16% in 2nd day and 21% in 48-hr feces, whereas, after dose of about 250 mg, rat excreted 25% in 24-hr urine, 42% in 2nd day, 10% in 3rd day, and 18% in 48-hr feces and 3% in 3rd day.
Experiments in rats with cannulated bile ducts showed that fecal /(14)C-naphthaleneacetic acid/ was probably due to material excreted in bile. In rat receiving a lower dose (about 0.1 mg), excretion in urine (38%) was 4-fold more than in bile (9%), whereas in rat receiving a higher dose (about 100 mg), excretion in bile (12%) was 3-fold more than in urine (4%). The pattern applied whether bile was collected for 2 or 6 hr. The portion of /(14)C-NAA/ excreted in bile was greater than that excreted in feces suggesting that entero-hepatic circulation occurred thus, (14)C-compound excreted in bile were partly reabsorbed from intestines (after possible modification, such as deconjugation of conjugates) to be excreted by kidneys. Thus, naphthaleneacetic acid was rapidly and completely absorbed after oral dose to rats and its excretion was dose-dependent, but was rapid after lower doses.
Thin apple and pear blossoms: foliar absorption characteristics: surplus washes off easily; physiological action results from absorbed and translocated portion. Translocation characteristics: mobile; accumulates in meristems.
1.周国泰,化学危险品安全技术全书,化学工业出版社,1997 2.国家环保局有毒化学品管理办公室、北京化工研究院合编,化学品毒性法规环境数据手册,中国环境科学出版社.1992 3.Canadian Centre for Occupational Health and Safety,CHEMINFO Database.1998 4.Canadian Centre for Occupational Health and Safety, RTECS Database, 1989
Biocatalytic asymmetric formation of tetrahydro-β-carbolines
摘要:
Strictosidine synthase triggers the formation of strictosidine from tryptamine and secologanin, thereby generating a carbon-catbon bond and a new stereogenic center Strictosidine contains a tetrahydro-beta-carboline moiety an important N-heterocyclic framework found in a range of natural products and synthetic pharmaceuticals Stereoselective methods to produce tetrahydro-B-carboline enantiomers are greatly valued We report that strictosidine synthase from Ophiorrhiza pumila utilizes a range of simple achiral aldehydes and substituted tryptamines to form highly enantioenriched (ee >98%) tetrahydro-beta-carbolines via a Pictet-Spengler reaction This is the first example of aldehyde substrate promiscuity in the strictosidine synthase family of enzymes and represents a first step toward developing a general biocatalytic strategy to access chiral tetrahydro-beta-carbolines (C) 2010 Elsevier Ltd All rights reserved
[EN] ACC INHIBITORS AND USES THEREOF<br/>[FR] INHIBITEURS DE L'ACC ET UTILISATIONS ASSOCIÉES
申请人:GILEAD APOLLO LLC
公开号:WO2017075056A1
公开(公告)日:2017-05-04
The present invention provides compounds I and II useful as inhibitors of Acetyl CoA Carboxylase (ACC), compositions thereof, and methods of using the same.
[EN] BICYCLYL-SUBSTITUTED ISOTHIAZOLINE COMPOUNDS<br/>[FR] COMPOSÉS ISOTHIAZOLINE SUBSTITUÉS PAR UN BICYCLYLE
申请人:BASF SE
公开号:WO2014206910A1
公开(公告)日:2014-12-31
The present invention relates to bicyclyl-substituted isothiazoline compounds of formula (I) wherein the variables are as defined in the claims and description. The compounds are useful for combating or controlling invertebrate pests, in particular arthropod pests and nematodes. The invention also relates to a method for controlling invertebrate pests by using these compounds and to plant propagation material and to an agricultural and a veterinary composition comprising said compounds.
Directed Remote Lateral Metalation: Highly Substituted 2-Naphthols and BINOLs by In Situ Generation of a Directing Group
作者:Jignesh J. Patel、Marju Laars、Wei Gan、Johnathan Board、Matthew O. Kitching、Victor Snieckus
DOI:10.1002/anie.201805203
日期:2018.7.20
general synthesis of highly substituted 2‐naphthols based on a new carbanionic reaction sequence is demonstrated. The reaction exploits the dual nature of lithium bases consisting of consecutive ring opening of readily available coumarins with either LiNEt2 or LiNiPr2 into Z‐cinnamamides, thus generating a directinggroup in situ and allowing, by conformational freedom, a lateral directed remote metalation
演示了基于新的碳负离子反应序列的高度取代的2-萘酚的一般合成。该反应利用了锂碱的双重性质,即将容易获得的具有LiNEt 2或LiN i Pr 2的香豆素连续开环成Z肉桂酰胺,从而在原位生成一个导向基团,并通过构象自由度允许横向定向的远程金属化以进行闭环反应,得到芳基2-萘酚,收率好至极好。可以将这些转换组合起来,以提供更有效的单锅法。对远端横向金属化步骤的机械洞察力,证明了对Z的要求描述了肉桂酰胺。还报道了该方法在高度取代的3,3'-二芳基BINOL配体合成中的应用。
Synthesis of (E)- and (Z)-pulvinones
作者:Alexander C. Campbell、Maurice S. Maidment、John H. Pick、Donald F. M. Stevenson
DOI:10.1039/p19850001567
日期:——
one of which involves a novel Wittig reaction. For the first time, members of the E-series, including the parent (E)-pulvinone, are reported and the structural elucidation of the geometric isomers is described. A method for quantitatively converting (E)-pulvinones into (Z)-pulvinones is presented, together with a technique for differentiating between the isomers.
A facile and effective approach toward the synthesis of primary amides fromcarboxylicacids has been developed. In the presence of 2,4,6-trichloro-1,3,5-triazine, a combination of ammonium thiocyanate and potassium carbonate led to the rapid conversion of carboxylicacids into the corresponding amides within five minutes grinding at room temperature. The use of ammonium thiocyanate as the amine source