tert-butyl (6R,7S,8S)-4,4,6,8-tetramethyl-3,5-dioxo-7-(2,2,2-trichloroethoxycarbonyloxy)undec-10-enoate | 224580-52-3

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 酮酸及其衍生物
• 英文名称: tert-butyl (6R,7S,8S)-4,4,6,8-tetramethyl-3,5-dioxo-7-(2,2,2-trichloroethoxycarbonyloxy)undec-10-enoate
• CAS: 224580-52-3
• 化学式: C₂₂H₃₃Cl₃O₇
• 分子量: 515.859
• InChiKey: GJIVUBOLJPTECL-VBQJREDUSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.4
• 重原子数：
  32
• 可旋转键数：
  15
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.73
• 拓扑面积：
  96
• 氢给体数：
  0
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  tert-butyl (6R,7S,8S)-4,4,6,8-tetramethyl-3,5-dioxo-7-(2,2,2-trichloroethoxycarbonyloxy)undec-10-enoate 在 2,6-二甲基吡啶 、 nickel(II) iodide 、 盐酸 、 4-二甲氨基吡啶 、 (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride 、 samarium diiodide 、 三苯胂 、 [RuCl₂-((R)-binap)]*NEt₃ 、 BBN 、 2,4,6-三氯苯甲酰氯 、 水 、 氢气 、 caesium carbonate 、 氟化氢吡啶 、 三乙胺 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 为溶剂， -78.0~25.0 ℃ 、8.27 MPa 条件下， 反应 29.25h， 生成 埃博霉素B
  参考文献：
  名称：

  New Chemical Synthesis of the Promising Cancer Chemotherapeutic Agent 12,13-Desoxyepothilone B: Discovery of a Surprising Long-Range Effect on the Diastereoselectivity of an Aldol Condensation

  摘要：

  The epothilones are naturally occurring cytotoxic molecules that possess the remarkable ability to arrest cell division through the stabilization of microtubule assemblies. Our in vivo studies with 12,13-desoxyepothilone B (dEpoB), have established that the desoxy compound is well tolerated and virtually curative against a variety of sensitive and resistant xenograft tumors in animal models. In light of these discoveries, we sought a chemical synthesis of dEpoB that would be able to support a serious and substantial discovery research program directed toward the clinical development of this molecule. The overall strategy for this endeavor assumed the ability to synthesize dEpoB from three constructs which include an achiral beta,delta-diketo ester construct A, an (S)-2-methylpentenal moiety B, and the thiazoyl-containing vinyl iodide moiety C. We envisioned that a diastereoselective aldol condensation between an achiral C5-C6 (Z)-metalloenolate derived from construct A and an (S)-2-methylalkanal fragment, B, would generate the desired C6-C7 bond. Second, a B-alkyl Suzuki coupling between the vinyl iodide construct C and an alkyl borane would form the C11-C12 bond. Finally, a late-stage reduction of the C3 ketone to the requisite C3 alcohol with high asymmetric induction would permit us to introduce the beta,delta-diketo ester fragment A, into the synthesis as a readily accessible achiral building block. The governing concepts for our new synthesis are described herein.

  DOI：

  10.1021/ja991189l
• 作为产物：
  描述：

  (S)-2-methyl-4-pentenal 在 吡啶 、 对甲苯磺酸 、 丙酮 、 lithium diisopropyl amide 作用下， 以 二氯甲烷 为溶剂， 反应 6.0h， 生成 tert-butyl (6R,7S,8S)-4,4,6,8-tetramethyl-3,5-dioxo-7-(2,2,2-trichloroethoxycarbonyloxy)undec-10-enoate
  参考文献：
  名称：

  New Chemical Synthesis of the Promising Cancer Chemotherapeutic Agent 12,13-Desoxyepothilone B: Discovery of a Surprising Long-Range Effect on the Diastereoselectivity of an Aldol Condensation

  摘要：

  The epothilones are naturally occurring cytotoxic molecules that possess the remarkable ability to arrest cell division through the stabilization of microtubule assemblies. Our in vivo studies with 12,13-desoxyepothilone B (dEpoB), have established that the desoxy compound is well tolerated and virtually curative against a variety of sensitive and resistant xenograft tumors in animal models. In light of these discoveries, we sought a chemical synthesis of dEpoB that would be able to support a serious and substantial discovery research program directed toward the clinical development of this molecule. The overall strategy for this endeavor assumed the ability to synthesize dEpoB from three constructs which include an achiral beta,delta-diketo ester construct A, an (S)-2-methylpentenal moiety B, and the thiazoyl-containing vinyl iodide moiety C. We envisioned that a diastereoselective aldol condensation between an achiral C5-C6 (Z)-metalloenolate derived from construct A and an (S)-2-methylalkanal fragment, B, would generate the desired C6-C7 bond. Second, a B-alkyl Suzuki coupling between the vinyl iodide construct C and an alkyl borane would form the C11-C12 bond. Finally, a late-stage reduction of the C3 ketone to the requisite C3 alcohol with high asymmetric induction would permit us to introduce the beta,delta-diketo ester fragment A, into the synthesis as a readily accessible achiral building block. The governing concepts for our new synthesis are described herein.

  DOI：

  10.1021/ja991189l

文献信息

• On the Interactivity of Complex Synthesis and Tumor Pharmacology in the Drug Discovery Process:  Total Synthesis and Comparative in Vivo Evaluations of the 15-Aza Epothilones
  作者：Shawn J. Stachel、Chul Bom Lee、Maria Spassova、Mark D. Chappell、William G. Bornmann、Samuel J. Danishefsky、Ting-Chao Chou、Yongbiao Guan

  DOI：10.1021/jo010275c

  日期：2001.6.1

  The total syntheses of 12,13,15-desoxy-15(S)-aza-epothilone B (aza-dEpoB; dEpoB-lactam) and 12,13, 15-desoxy-15(R)-aza-epothilone B (15-epi-aza-dEpoB; 15-epi-dEpoB-lactam) have been accomplished via a highly convergent strategy. We have also successfully oxidized 12,13,15-desoxy 15(S)-aza-epothilone B to aza-epothilone B (aza-EpoB; EpoB-lactam). Aza-epothilone B has been advanced to phase I clinical trials by the Bristol-Myers Squibb group. Our synthesis is efficient and was amenable to the production of significant quantities of these lactams. Using our fully synthetically derived lactams, in vitro and in vivo studies were conducted in comparison with advanced clinical candidates, 12,13-desoxyepothilone B and 12,13-desoxyepothilone F, also derived by total synthesis.
• The synthesis and evaluation of 12,13-benzodesoxyepothilone B: a highly convergent route
  作者：Peter W. Glunz、Lifeng He、Susan B. Horwitz、Subrata Chakravarty、Iwao Ojima、Ting-Chao Chou、Samuel J. Danishefsky

  DOI：10.1016/s0040-4039(99)01433-1

  日期：1999.9

  The title compound retains some of the affinity for microtubule assemblies as does 12, 13-desoxyepothilone B. (C) 1999 Elsevier Science Ltd. All rights reserved.
• New Chemical Synthesis of the Promising Cancer Chemotherapeutic Agent 12,13-Desoxyepothilone B: Discovery of a Surprising Long-Range Effect on the Diastereoselectivity of an Aldol Condensation
  作者：Christina R. Harris、Scott D. Kuduk、Aaron Balog、Ken Savin、Peter W. Glunz、Samuel J. Danishefsky

  DOI：10.1021/ja991189l

  日期：1999.8.1

  The epothilones are naturally occurring cytotoxic molecules that possess the remarkable ability to arrest cell division through the stabilization of microtubule assemblies. Our in vivo studies with 12,13-desoxyepothilone B (dEpoB), have established that the desoxy compound is well tolerated and virtually curative against a variety of sensitive and resistant xenograft tumors in animal models. In light of these discoveries, we sought a chemical synthesis of dEpoB that would be able to support a serious and substantial discovery research program directed toward the clinical development of this molecule. The overall strategy for this endeavor assumed the ability to synthesize dEpoB from three constructs which include an achiral beta,delta-diketo ester construct A, an (S)-2-methylpentenal moiety B, and the thiazoyl-containing vinyl iodide moiety C. We envisioned that a diastereoselective aldol condensation between an achiral C5-C6 (Z)-metalloenolate derived from construct A and an (S)-2-methylalkanal fragment, B, would generate the desired C6-C7 bond. Second, a B-alkyl Suzuki coupling between the vinyl iodide construct C and an alkyl borane would form the C11-C12 bond. Finally, a late-stage reduction of the C3 ketone to the requisite C3 alcohol with high asymmetric induction would permit us to introduce the beta,delta-diketo ester fragment A, into the synthesis as a readily accessible achiral building block. The governing concepts for our new synthesis are described herein.