3-methyl-7-ethyl-xanthine | 55242-68-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 咪唑并嘧啶类
• 英文名称: 3-methyl-7-ethyl-xanthine
• 英文别名: 7-ethyl-3-methyl-1H-purine-2,6(3H,7H)-dione；7-ethyl-3-methyl-1H-purine-2,6(3H,7H)dione；7-ethyl-3-methyl-3,7-dihydro-purine-2,6-dione；7-Aethyl-3-methyl-3,7-dihydro-purin-2,6-dion；7-ethyl-3-methylxanthine；7-Ethyl-3-methyl-1,3,7-trihydropurine-2,6-dione；7-ethyl-3-methylpurine-2,6-dione
• CAS: 55242-68-7
• 化学式: C₈H₁₀N₄O₂
• mdl: MFCD18785249
• 分子量: 194.193
• InChiKey: GISWGHGEIIOKGX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.5
• 重原子数：
  14
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.375
• 拓扑面积：
  67.2
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  3-methyl-7-ethyl-xanthine 在 potassium carbonate 、 potassium iodide 作用下， 以 四氢呋喃 、 N,N-二甲基甲酰胺 为溶剂， 反应 3.0h， 生成 7-ethyl-1-(5-ethyl-5-hydroxyheptyl)-3-methyl-1H-purine-2,6(3H,7H)dione
  参考文献：
  名称：

  羟基嘌呤类化合物及其应用

  摘要：

  本发明公开了一系列羟基嘌呤类化合物及其作为PDE2或TNFa抑制剂的应用，具体公开了式(Ⅰ)所示化合物、其互变异构体或其药学上可接受的盐。

  公开号：

  CN105566324B
• 作为产物：
  描述：

  7-乙基茶碱 在 一水合肼 、 sodium nitrite 作用下， 以 溶剂黄146 为溶剂， 反应 5.0h， 生成 3-methyl-7-ethyl-xanthine
  参考文献：
  名称：

  Ueda, Taisei; Oda, Noriichi; Sakakibara, Jinsaku, Heterocycles, 1982, vol. 19, # 12, p. 2291 - 2294

  摘要：

  DOI：

文献信息

• METHODS AND SYSTEMS FOR DESIGNING AND/OR CHARACTERIZING SOLUBLE LIPIDATED LIGAND AGENTS
  申请人：TUFTS MEDICAL CENTER

  公开号：US20160052982A1

  公开（公告）日：2016-02-25

  The present application provides methods for preparing soluble lipidated ligand agents comprising a ligand entity and a lipid entity, and in some embodiments, provides relevant parameters of each of these components, thereby enabling appropriate selection of components to assemble active agents for any given target of interest.

  本申请提供了制备可溶性脂质化配体药剂的方法，包括配体实体和脂质实体，并在某些实施例中提供了这些组分的相关参数，从而使得能够适当选择组分来组装出针对任何感兴趣的靶点的活性药剂。
• Alkylxanthine phosphonates and alkylxanthine phosphine oxides and their
  申请人：Hoechst Aktiengesellschaft

  公开号：US05728686A1

  公开（公告）日：1998-03-17

  Alkylxanthine phosphonates and alkylxanthine phosphine oxides and their use as pharmaceuticals A compound of the formula ##STR1## where R.sup.1 and R.sup.3 are identical or different and at least one of the radicals R.sup.1 and R.sup.3 is a radical of the formula XI ##STR2## in which E is a covalent bond or a (C.sub.1 -C.sub.5)-alkyl, are suitable for the production of pharmaceuticals for the treatment of muscular atrophy, cachexia, muscular dystrophy, sepsis, septic shock, endotoxic shock, systemic inflammation response syndrome, adult respiratory distress syndrome, cerebral malaria, chronic pneumonia, pulmonary sarcoidosis, reperfusion damage, scar formation, inflammation of the bowel and ulcerative colitis, as a result of infections, acquired immune deficiency syndrome, cancer, trauma and other disorders having increased protein loss, peripheral circulatory disorders, disorders having altered leucocyte adhesion, and also disorders which are accompanied by an increased or unregulated tumor necrosis factor production such as rheumatoid arthritis, rheumatoid spondylitis, osteoarthritis and other arthritic disorders.

  烷基黄嘌呤磷酰化合物和烷基黄嘌呤磷酰亚胺氧化物及其作为药物的应用 一种具有以下公式的化合物：##STR1##，其中R.sup.1和R.sup.3相同或不同，且至少一个自由基R.sup.1和R.sup.3是具有以下公式XI的自由基：##STR2##，其中E是共价键或（C.sub.1 -C.sub.5）-烷基，适用于生产用于治疗肌萎缩、恶病质、肌营养不良、败血症、败血性休克、内毒素性休克、系统性炎症反应综合征、成人呼吸窘迫综合征、脑型疟疾、慢性肺炎、肺肉芽肿病、再灌注损伤、疤痕形成、肠炎和溃疡性结肠炎、由于感染、获得性免疫缺陷综合症、癌症、创伤以及其他具有增加蛋白质丢失的疾病、外周循环障碍、具有改变的白细胞粘附的疾病，以及那些伴随有肿瘤坏死因子产生增加或不受控制的疾病，如类风湿性关节炎、强直性脊柱炎、骨关节炎和其他关节疾病。
• Xanthine derivatives
  申请人：Hoechst Aktiengesellschaft

  公开号：US04289776A1

  公开（公告）日：1981-09-15

  Compounds of general formula ##STR1## wherein one of the groups R.sub.1 and R.sub.3 is a straight-chain or branched oxoalkyl group consisting from 5 to 8 carbon atoms and the oxygen atom is attached to a non-terminal carbon atom and is separated from the nearest ring nitrogen atom by at least 3 carbon atoms in (.omega.-1)-oxoalkyl groups and by at least 4 carbon atoms in oxoalkyl groups in which the oxygen atom is separated from the terminal carbon atom by more than one carbon atom, R.sub.2 and the other one of groups R.sub.1 and R.sub.3 are straight chain or branched alkyl groups containing from 1 to 12 carbon atoms but wherein that group R.sub.1 or R.sub.3 which is other than an oxoalkyl group may also be hydrogen, one nitrogen-bound substituent being hydrogen or alkyl containing more than 1 carbon atom, and physiologically acceptable acid addition salts thereof, a process for their preparation and pharmaceutical compositions containing said compounds.

  通式为##STR1##的化合物，其中R.sub.1和R.sub.3中的一个是由5到8个碳原子组成的直链或支链氧烷基基团，氧原子连接到非末端碳原子，并且在(.omega.-1)-氧烷基基团中，氧原子与最近的环氮原子至少相隔3个碳原子，在氧烷基基团中，氧原子与末端碳原子相隔超过一个碳原子时，至少相隔4个碳原子；R.sub.2和R.sub.1和R.sub.3中的另一个是由1到12个碳原子组成的直链或支链烷基基团，但R.sub.1或R.sub.3中除了氧烷基基团外，也可以是氢，一个与氮相结合的取代基是氢或含有多于1个碳原子的烷基，以及其生理上可接受的酸盐，其制备方法和含有该化合物的药物组合物。
• Purines. XLIX. Synthesis and Proton Nuclear Magnetic Resonance Study of 3,7-Dialkylxanthines and 1,3,7-Trialkylxanthines.
  作者：Tozo FUJII、Tohru SAITO、Katsumi TAMURA

  DOI：10.1248/cpb.39.2855

  日期：——

  A general synthetic route to 3, 7-dialkylxanthines (type 9) from 3, 7-dialkyladenines (6) [hence from 3- or 7-alkyladenines (11 or 10)] has been established. The route started with ethoxycarbonylation of 1-alkyl-4-(alkylamino)-1H-imidazole-5-carboxamides (7), readily obtainable from 6 by alkaline hydrolysis, and proceeded through cyclization of the resulting carbamates (8) under alkaline conditions. Alkylation of 9 with alkyl halide in N, N-dimethylformamide in the presence of anhydrous K2CO3 extended the above synthetic route to the 1, 3, 7-trialkylxanthine level (type 14). Hydrogenolytic debenzylation of 3-benzyl-1, 7-dimethylxanthine (16), prepared by following this general synthetic route, furnished paraxanthine (26) in fair yield. Conversion of 26 into 3-(4-hydroxy-3-nitrobenzyl)-1, 7-dimethylxanthine (24), isomeric with the bryozoan purine phidolopin (2), was effected through aralkylation with 4-(methoxymethocy)-3-nitrobenzyl bromide (28) followed by O-deprotection.On the basis of proton nuclear magnetic resonance data for the 3, 7-dialkylxanthines (3 and 9b-i) and 1, 3, 7-trialkylxanthines (5 and 14-22) thus prepared, reliable criteria for distinguishing signals of N-alkyl substituents at various positions are put forward.

  从 3，7-二烷基腺嘌呤（6）[进而从 3 或 7-烷基腺嘌呤（11 或 10）]合成 3，7-二烷基黄嘌呤（9 型）的一般合成路线已经确立。该方法首先是对 1-烷基-4-（烷基氨基）-1H-咪唑-5-羧酰胺（7）进行乙氧基羰基化，通过碱性水解很容易从 6 中得到，然后在碱性条件下对得到的氨基甲酸酯（8）进行环化。在无水 K2CO3 的存在下，9 在 N，N-二甲基甲酰胺中与烷基卤化物发生烷基化反应，将上述合成路线扩展到 1，3，7-三烷基黄嘌呤水平（类型 14）。按照上述一般合成路线制备的 3-苄基-1，7-二甲基黄嘌呤（16）进行氢解去苄基化反应，可以得到副黄嘌呤（26），收率尚可。将 26 转化为 3-（4-羟基-3-硝基苄基）-1,7-二甲基黄嘌呤（24），与红藻嘌呤 phidolopin（2）是同分异构体，通过与 4-（甲氧基甲基）-3-硝基苄基溴（28）酰化，然后进行 O-脱保护。根据由此制备的 3，7-二烷基黄嘌呤（3 和 9b-i）和 1，3，7-三烷基黄嘌呤（5 和 14-22）的质子核磁共振数据，提出了区分不同位置上 N-烷基取代基信号的可靠标准。
• Hydroxyhexyl-alkylxanthines and pharmaceutical compositions containing
  申请人：Hoechst Aktiengesellschaft

  公开号：US04108995A1

  公开（公告）日：1978-08-22

  Compound of the formula ##STR1## wherein one of the groups R.sub.1, R.sub.2 and R.sub.3 is a hydroxyalkyl group containing from 4 to 8 carbon atoms, one of the other two, which may be the same or different, is an alkyl group containing from 2 to 12 carbon atoms and the third one is an alkyl group containing from 1 to 12 carbon atoms or a hydrogen atom, R.sub.2 however being an alkyl or hydroxyalkyl group, at least one of the groups R.sub.1, R.sub.2 and R.sub.3 containing at least 5 carbon atoms, a process for their preparation and a pharmaceutical composition containing said compounds.

  化合物的公式为##STR1##，其中R.sub.1、R.sub.2和R.sub.3中的一个是含有4至8个碳原子的羟基烷基，另外两个中的一个（可以相同也可以不同）是含有2至12个碳原子的烷基，第三个是含有1至12个碳原子的烷基或氢原子，但R.sub.2是烷基或羟基烷基，至少有一个R.sub.1、R.sub.2和R.sub.3的基团含有至少5个碳原子，一种制备它们的方法和含有所述化合物的药物组合物。