allyl (4R,5S,6S)-3-[1-allyloxycarbonylpyrrolidin-(3S,5S)-5-dimethylaminocarbonyl-3-ylthio]-6-[(1R)-1-(tert-butyldimethylsilyloxy)ethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate | 144837-85-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 内酰胺类
• 英文名称: allyl (4R,5S,6S)-3-[1-allyloxycarbonylpyrrolidin-(3S,5S)-5-dimethylaminocarbonyl-3-ylthio]-6-[(1R)-1-(tert-butyldimethylsilyloxy)ethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate
• 英文别名: Allyl (4R,5S,6S)-3-[(2S,4S)-1-allyloxycarbonyl-2-(dimethylcarbamoyl)pyrrolidin-4-ylthio]-6-[(1R)-1-(tert-butyldimethylsilyloxy)ethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate；prop-2-enyl (4R,5S,6S)-6-[(1R)-1-[tert-butyl(dimethyl)silyl]oxyethyl]-3-[(3S,5S)-5-(dimethylcarbamoyl)-1-prop-2-enoxycarbonylpyrrolidin-3-yl]sulfanyl-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate
• CAS: 144837-85-4
• 化学式: C₃₀H₄₇N₃O₇SSi
• 分子量: 621.871
• InChiKey: QRYRNQUHPKEFES-WSJQOYCOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.4
• 重原子数：
  42
• 可旋转键数：
  14
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  131
• 氢给体数：
  0
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  allyl (4R,5S,6S)-3-[1-allyloxycarbonylpyrrolidin-(3S,5S)-5-dimethylaminocarbonyl-3-ylthio]-6-[(1R)-1-(tert-butyldimethylsilyloxy)ethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate 在 硝基甲烷 、 四氯化钛 作用下， 以 二氯甲烷 为溶剂， 反应 14.0h， 以60%的产率得到allyl (4R,5S,6S)-3-[(3S,5S)-5-dimethylaminocarbonyl-1-allyloxycarbonylpyrrolidin-3-ylthio]-6-[(1R)-1-(hydroxy)ethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate
  参考文献：
  名称：

  Efficient Method for the Deprotection of tert-Butyldimethylsilyl Ethers with TiCl₄−Lewis Base Complexes:  Application to the Synthesis of 1β-Methylcarbapenems

  摘要：

  TiCl4-Lewis base (AcOEt, CH3NO2) complexes smoothly deprotected tert-butyldimethylsilyl (TBDMS) ethers. The reaction velocity with these complexes, which seemed less reactive due to the influence of Lewis bases, was considerably greater than that with TiCl4 alone. Selective desilylations between aliphatic and aromatic TBDMS ethers (1 and 5), between 1 and benzyl, allyl, tosyl, methoxyphenyl, and chloroacetyl ethers (13, 14, 15, 16, and 17), and between TBDMS and TBDPS ethers (18 and 19) were successfully performed. Desilylation of TBDMS-aldol, acyloin, and beta-lactam analogues 9-12 proceeded smoothly due to anchimeric assistance by the neighboring carbonyl groups. The present method was successfully applied to the practical synthesis of 1 beta-methylcarbapenems 20a'-f'.

  DOI：

  10.1021/jo0604484
• 作为产物：
  描述：

  (2S,4S)-N,N-dimethyl-1-allyloxycarbonyl-4-mercapto-2-pyrrolidinecarboxamide 在 4-二甲氨基吡啶 、 N,N'-二环己基碳二亚胺 作用下， 以 苯 为溶剂， 反应 17.0h， 生成 allyl (4R,5S,6S)-3-[1-allyloxycarbonylpyrrolidin-(3S,5S)-5-dimethylaminocarbonyl-3-ylthio]-6-[(1R)-1-(tert-butyldimethylsilyloxy)ethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate
  参考文献：
  名称：

  Efficient synthesis of 1β-methylcarbapenems based on the counter-attack strategy

  摘要：

  A seven-step efficient synthesis of 1 beta-methylcarbapenems 1 from the acetoxyazetidinone 6 is described. The Reformatsky reaction of 3-(2-bromopropionyl)-1,3-benzoxazinone 7 with compound 6 gave an adduct 8 in 96% yield with high beta-selectivity (beta:alpha = 92:8). Compound 8 was transformed in three steps into the side-chain thiol esters 12a-e in good yields. The chlorotrimethylsilane-mediated Dieckmann-type cyclisation of thioesters 12b-e followed by counter-attack of the liberated thiolate anion 18 yielded the C-2 alkylthio- or arylthio-substituted 1 beta-methylcarbapenems 19b-e in a one-pot procedure. The synthesis of 1 beta-methylcarbapenems 1 was demonstrated by a simple cleavage of the silyl ether and allyl ester of compound 19b to afford target compound 1b in high yield.

  DOI：

  10.1039/p19960002851

文献信息

• Practical Short Synthesis of 1β-Methylcarbapenem Utilizing a New Dehydration Type Ti-Dieckmann Condensation
  作者：Yoo Tanabe、Naoki Manta、Ryohei Nagase、Tomoniri Misaki、Yoshinori Nishii、Makoto Sunagawa、Akira Sasaki

  DOI：10.1002/adsc.200303065

  日期：2003.8

  An efficient, practical, and stereocontrolled synthesis of 1β-methylcarbapenems has been performed utilizing a new dehydration type of Ti-Dieckmann (intramolecular Ti-Claisen) condensation. This cyclization reaction has the advantage of direct incorporation of the thiol moiety into the target 1β-methylcarbapenem, compared with the traditional basic Dieckmann condensation. Another advantage is the use

  利用新型脱水类型的Ti-Dieckmann（分子内Ti-Claisen）缩合反应，可以高效，实用且立体控制地合成1β-甲基卡巴姆。与传统的碱性狄克曼缩合反应相比，该环化反应具有将硫醇部分直接掺入目标1β-甲基卡巴南的优点。另一个优点是使用对环境无害的（低毒性和安全的）试剂（TiCl 4和Et 3 N或Bu 3 N）。
• A New Synthesis of 1β-Alkylcarbapenems Utilizing Eschenmoser Sulfide Contraction of the Novel Thiazinone Intermediates
  作者：Osamu Sakurai、Tsuyoshi Ogiku、Masami Takahashi、Masahito Hayashi、Takeshi Yamanaka、Hiroshi Horikawa、Tameo Iwasaki

  DOI：10.1021/jo960764q

  日期：1996.1.1

  Novel syntheses of the 1,beta-alkylcarbapenems were achieved on the basis of Eschenmoser sulfide contraction via the new bicyclic 1,3-thiazinone intermediates. 1,3-Thiazinones 7, 16, and 25 were effectively prepared from thioesters 5 and 22 using a C4-S bond formation process. The sulfide contraction reactions were performed by treatment of 7, 16, and 25 with base (NaH or KO-t-Bu) in the presence of triphenylphosphine to generate the corresponding carbapenem enolate 12, 17, and 26, which were trapped by (PhO)(2)POCl followed by the reaction with mercaptans to afford carbapenems 10a, 10b, 19, and 28, respectively.
• Efficient synthesis of 1β-methylcarbapenems based on the counter-attack strategy
  作者：Masahiko Seki、Kazuhiko Kondo、Tameo Iwasaki

  DOI：10.1039/p19960002851

  日期：——

  A seven-step efficient synthesis of 1 beta-methylcarbapenems 1 from the acetoxyazetidinone 6 is described. The Reformatsky reaction of 3-(2-bromopropionyl)-1,3-benzoxazinone 7 with compound 6 gave an adduct 8 in 96% yield with high beta-selectivity (beta:alpha = 92:8). Compound 8 was transformed in three steps into the side-chain thiol esters 12a-e in good yields. The chlorotrimethylsilane-mediated Dieckmann-type cyclisation of thioesters 12b-e followed by counter-attack of the liberated thiolate anion 18 yielded the C-2 alkylthio- or arylthio-substituted 1 beta-methylcarbapenems 19b-e in a one-pot procedure. The synthesis of 1 beta-methylcarbapenems 1 was demonstrated by a simple cleavage of the silyl ether and allyl ester of compound 19b to afford target compound 1b in high yield.
• Efficient Method for the Deprotection of <i>tert</i>-Butyldimethylsilyl Ethers with TiCl₄−Lewis Base Complexes:  Application to the Synthesis of 1β-Methylcarbapenems
  作者：Akira Iida、Hiroki Okazaki、Tomonori Misaki、Makoto Sunagawa、Akira Sasaki、Yoo Tanabe

  DOI：10.1021/jo0604484

  日期：2006.7.1

  TiCl4-Lewis base (AcOEt, CH3NO2) complexes smoothly deprotected tert-butyldimethylsilyl (TBDMS) ethers. The reaction velocity with these complexes, which seemed less reactive due to the influence of Lewis bases, was considerably greater than that with TiCl4 alone. Selective desilylations between aliphatic and aromatic TBDMS ethers (1 and 5), between 1 and benzyl, allyl, tosyl, methoxyphenyl, and chloroacetyl ethers (13, 14, 15, 16, and 17), and between TBDMS and TBDPS ethers (18 and 19) were successfully performed. Desilylation of TBDMS-aldol, acyloin, and beta-lactam analogues 9-12 proceeded smoothly due to anchimeric assistance by the neighboring carbonyl groups. The present method was successfully applied to the practical synthesis of 1 beta-methylcarbapenems 20a'-f'.