α-(methylthio)acetic acid anhydride | 63521-90-4

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: α-(methylthio)acetic acid anhydride
• 英文别名: α-(methylthio)acetic anhydride；α-methylthioacetic anhydride；2-(methylthio)acetic anhydride；(methylthio)acetic anhydride；methylsulfanyl-acetic acid-anhydride；Methylmercapto-essigsaeure-anhydrid；(Methylsulfanyl)acetic anhydride；(2-methylsulfanylacetyl) 2-methylsulfanylacetate
• CAS: 63521-90-4
• 化学式: C₆H₁₀O₃S₂
• 分子量: 194.276
• InChiKey: KSLOWBCNYMHGGH-UHFFFAOYSA-N

物化性质

• 沸点：
  111-112 °C(Press: 0.25 Torr)
• 密度：
  1.244±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  11
• 可旋转键数：
  6
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  94
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  α-(methylthio)acetic acid anhydride 、 N-苯基-1-(2-苯乙基)-4-哌啶胺 以 苯 为溶剂， 以70%的产率得到N-(1-(2-phenylethyl)-4-piperidinyl)-2-(methylthio)acetanilide
  参考文献：
  名称：

  Jilek, Jiri; Rajsner, Miroslav; Valenta, Vladimir, Collection of Czechoslovak Chemical Communications, 1990, vol. 55, # 7, p. 1828 - 1853

  摘要：

  DOI：
• 作为产物：
  描述：

  (甲硫基)乙酸 在 N,N'-二环己基碳二亚胺 作用下， 以 乙醚 为溶剂， 反应 24.0h， 生成 α-(methylthio)acetic acid anhydride
  参考文献：
  名称：

  (Methylsulfanyl)alkanoate ester biosynthesis in Actinidia chinensis kiwifruit and changes during cold storage

  摘要：

  Four 3-(methylsulfanyl)propionate esters, ethyl 3-(methylsulfanyl)prop-2-enoate, two 2-(methylsulfanyl)acetate esters and their possible precursors 2-(methylsulfanyl)ethanol, 3-(methylsulfanyl)propanol and 3-(methylsulfanyl)propanal were quantified from the headspace of Actinidia chinensis 'Hort 16A' kiwifruit pulp by GC-MS-TOF analysis. The majority of these compounds were specific for eating-ripe fruit and their levels increased in parallel with the climacteric rise in ethylene, accumulating towards the very soft end of the eating firmness. No ethylene production could be observed after long-term storage (4-6 months) at 1.5 degrees C and the levels of all methylsulfanyl-volatiles, except methional, declined by 98-100% during that period. This depletion of (methylsulfanyl)alkanoate-esters after prolonged cold storage points towards little flavour impact of these compounds on commercial 'Hort 16A' kiwifruits. However, ethyl 3-(methylsulfanyl)propionate is suggested to be odour active in ripe 'Hort 16A' fruit that has not been stored. Gene expression measured by q-RT PCR of six ripening-specific alcohol acyltransferase (AAT) expressed sequence tags and (methylsulfanyl)alkanoate-ester production of cell-free extracts were also significantly decreased after prolonged cold storage. However, (methylsulfanyl)alkanoate-ester synthesis of cell-free extracts and AAT gene transcript levels could be recovered by ethylene treatment after five months at 1.5 degrees C indicating that the biosynthesis of (methylsulfanyl)alkanoate-esters in 'Hort 16A' kiwifruit is likely to depend on ethylene-regulated AAT-gene expression. That the composition but not the concentration of (methylsulfanyl)alkanoate-esters in fresh fruit could be restored after ethylene treatment suggests that substrate availability might also have an impact on the final levels of these volatiles. (C) 2010 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.phytochem.2010.01.016

文献信息

• Mechanism-Based Isocoumarin Inhibitors for Human Leukocyte Elastase. Effect of the 7-Amino Substituent and 3-Alkoxy Group in 3-Alkoxy-7-amino-4-chloroisocoumarins on Inhibitory Potency
  作者：John E. Kerrigan、Jozef Oleksyszyn、Chih-Min Kam、Joe Selzler、James C. Powers

  DOI：10.1021/jm00003a017

  日期：1995.2

  prepared and evaluated as inhibitors of human leukocyte elastase (HLE). In addition, a new series of acyl, urea, and carbamate derivatives of 7-amino-4-chloro-3-methoxyisocoumarin (1), 7-amino-4-chloro-3-propoxyisocoumarin (3), and 7-amino-4-chloro-3-(2-bromoethoxy)isocoumarin (6) have been synthesized. Most of the synthesized compounds are very potent inhibitors of HLE with kobs/[I] values between 10(4)

  已经制备了具有各种3-烷氧基取代基的一系列3-烷氧基-7-氨基-4-氯异香豆素，并将其评估为人白细胞弹性蛋白酶（HLE）的抑制剂。此外，还推出了一系列新的7-氨基-4-氯-3-甲氧基异香豆素（1），7-氨基-4-氯-3-丙氧基异香豆素（3）和7-氨基-香豆素的酰基，脲和氨基甲酸酯衍生物已经合成了4-氯-3-（2-溴乙氧基）异香豆素（6）。大多数合成的化合物都是非常有效的HLE抑制剂，其kobs / [I]值在10（4）和10（6）M-1 s-1之间。异香豆素环7-氨基位置的疏水取代基为HLE提供了最佳的选择性和抑制能力。在2-溴乙氧基系列中，具有PhNHCONH 7取代基的化合物24的kobs / [I]值为1.2 x 10（6）M-1 s-1，对HLE具有很高的选择性，并且是最有效的HLE抑制剂。经过HLE测试。在长链L-苯丙氨酰基衍生物中，kobs / [I]值为1.8 x 10（5）M-1
• Synthesis and in vitro evaluation of novel highly potent coumarin inhibitors of gyrase B
  作者：Patrick Laurin、Didier Ferroud、Michel Klich、Claudine Dupuis-Hamelin、Pascale Mauvais、Patrice Lassaigne、Alain Bonnefoy、Branislav Musicki

  DOI：10.1016/s0960-894x(99)00329-7

  日期：1999.7

  and in vitro biological activity of a series of novel coumarin inhibitors of gyrase B is presented. Replacement of the 3-acylamino residue (3-NHCOR) of coumarin drugs with reversed isosteres C(=O)R, C(=N-OR)R', COOR, CONHR and CONHOR leads to highly potent analogues which displayed excellent inhibition of the negative supercoiling of the relaxed DNA and antibacterial activity.

  介绍了一系列新型促旋酶B香豆素抑制剂的设计，合成和体外生物学活性。用反向等排体C（= O）R，C（= N-OR）R'，COOR，CONHR和CONHOR取代香豆素药物的3-酰基氨基残基（3-NHCOR）产生了高效的类似物，该类似物表现出出色的抑制作用松弛的DNA的负超螺旋和抗菌活性。
• A concise total synthesis of (.+-.)-3-demethoxyerythratidinone based on an acid-promoted double cyclization of .ALPHA.-sulfinylacetamides.
  作者：Hiroyuki ISHIBASHI、Tatsunori SATO、Masako TAKAHASHI、Mayumi HAYASHI、Kozue ISHIKAWA、Masazumi IKEDA

  DOI：10.1248/cpb.38.907

  日期：——

  The total synthesis of the Erythrina alkaloid (±)-3-demethoxyerythratidinone (20) has been accomplished in 39% overall yield from homoveratrylamine(1)by 8 chemical operations, using a tandem cationic cyclization of the Pummerer rearrangement intermediate derived from the sulfoxide 5 as the key step. Of particular interest is the observation that heating of 5 with p-toluenesulfonic acid provides the erythrinan 6 (and the deprotected derivative 7) as a single stereoisomer, whereas similar treatment of 5 in the presence of ethylene glycol gives initially the bicyclic lactam 8, which then cyclizes under the reaction conditions used to afford a mixture of two diastereomeric erythrinans 6 and 9.A possible explanation of these contrasting results is presented.

  以从亚砜 5 中得到的普默尔重排中间体的串联阳离子环化为关键步骤，通过 8 次化学反应，以均藜芦胺（1）为原料，完成了红景天生物碱 (±)-3-demethoxyerythratidinone (20) 的全合成，总收率为 39%。特别值得注意的是，用对甲苯磺酸加热 5，可得到单一立体异构体的赤藓红 6（以及去保护衍生物 7），而在乙二醇存在下对 5 进行类似处理，最初可得到双环内酰胺 8，然后在所用的反应条件下发生环化，得到两种非对映赤藓红 6 和 9 的混合物。
• Mn(III)/Cu(II)-Mediated Oxidative Radical Cyclization of α-(Methylthio)acetamides Leading to Erythrinanes
  作者：Shiho Chikaoka、Atsushi Toyao、Mizuho Ogasawara、Osamu Tamura、Hiroyuki Ishibashi

  DOI：10.1021/jo020573p

  日期：2003.1.1

  oxidation product 10. On the basis of these results, formation of 5 from 4 was thought to proceed via nucleophilic attack of the pyrrole ring on the cation-radical lX, generated by a single electron-transfer reaction of the acetoxy-substituted intermediate V. Treatment of compound 16 with Mn(OAc)3/Cu(OAc)2 gave no erythrinane derivative with recovery of the starting material, indicating that the presence

  在Cu（OAc）2存在下用Mn（OAc）3处理N- [2-（3,4-二甲氧基苯基）乙基]-α-（甲硫基）乙酰胺3得到四氢吲哚-2-酮4，然后将其环化与Mn（OAc）3生成4-乙酰氧基红杉烷5。3，4-亚甲基二氧基苯基同源物8的类似反应也得到四氢吲哚-2-酮9，然而，其仅产生痕量的Mn（OAc）3。介导的环化产物11并提供氧化产物10。基于这些结果，认为4中的5的形成是通过吡咯环对阳离子自由基lX的亲核攻击而进行的，该自由基是由单个电子转移反应产生的用Mn（OAc）3 / Cu（OAc）2处理化合物16，在回收起始原料的情况下未得到赤藓烷衍生物，表明存在4的甲硫基对于实现赤藓烷5的形成至关重要。另一方面，使用Mn（OAc）3处理3，使用Cu（OTf）2代替Cu（OAc）作为添加剂图2给出了另一种赤藓烷17。该方法用于天然存在的赤藓生物碱3-脱甲氧基赤藓丁酮（20）的形式合成。
• Studies on topical antiinflammatory corticosteroids. II Synthesis and vasoconstrictive activity of 11.BETA.,17.ALPHA.,21-trihydroxy-6.ALPHA.-methyl-1,4-pregnadiene-3,20-dione 17-methoxy- and (methylthio)acetates.
  作者：SABURO SUGAI、TOKUJI OKAZAKI、YOSHIO KAJIWARA、TOSHIFUMI KANBARA、YASUO NAITO、.SEIICHIRO YOSHIDA、SANYA AKABOSHI、SHIRO IKEGAMI、YOSHIAKI KAMANO

  DOI：10.1248/cpb.34.1607

  日期：——

  17-Methoxyacetate (3a) and 17-(methylthio)acetate (3b) of 11β, 17α, 21-trihydroxy-6α-methyl-1, 4-pregnadiene-3, 20-dione (6α-methylprednisolone, 1) and their 21-esters (4a and 4b) were synthesized and tested for vasoconstrictive activities. The activities of the 17-(methylthio)acetate derivatives (3b and 4b) were more potent than those of the corresponding 17-methoxyacetates (3a and 4a). The activities of 3b, 4a2, 4b1-4 and 4b5 were equivalent to that of 9α-fluoro-11β, 21-dihydroxy-16β-methyl-17α-valeroyloxy-1, 4-pregnadiene-3, 20-dione (betamethasone 17-valerate, BV). The reaction of 6α-methylprednisolone (1) with triethyl orthomethoxyacetate afforded a stereoisomeric mixture of 6α-methylprednisolone 17, 21-cyclic ortho esters (2aA and 2aB) in a ratio of 22 : 78, while the reaction of 1 with triethyl ortho(methylthio)acetate resulted in the formation of a single isomer (2bB) of the isomeric 17, 21-cyclic ortho esters (2b).

  11β,17α,21-三羟基-6α-甲基-1,4-孕二烯-3,20-二酮(6α-甲基泼尼松龙,1)的17-甲氧基乙酸酯(3a)和17-(甲硫基)乙酸酯(3b)及其21合成酯（4a 和 4b）并测试其血管收缩活性。 17-(甲硫基)乙酸酯衍生物(3b和4b)的活性比相应的17-甲氧基乙酸酯(3a和4a)更有效。 3b、4a2、4b1-4和4b5的活性相当于9α-氟-11β,21-二羟基-16β-甲基-17α-戊酰氧基-1,4-孕二烯-3,20-二酮(倍他米松17-戊酸盐，BV)。 6α-甲基泼尼松龙 (1) 与原甲氧基乙酸三乙酯反应得到 6α-甲基泼尼松龙 17, 21-环原酸酯 (2aA 和 2aB) 以 22 : 78 的比例形成的立体异构混合物，而 1 与原甲硫基三乙酯反应得到)乙酸酯导致形成异构体 17, 21-环原酸酯 (2b) 的单一异构体 (2bB)。