(2S,4R)-4-(1,3-dithian-2-yl)-2-methylpentanal | 135663-69-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二噻烷
• 英文名称: (2S,4R)-4-(1,3-dithian-2-yl)-2-methylpentanal
• CAS: 135663-69-3
• 化学式: C₁₀H₁₈OS₂
• 分子量: 218.384
• InChiKey: VEFDALDDSRXNOK-DTWKUNHWSA-N

物化性质

• 沸点：
  328.8±22.0 °C(predicted)
• 密度：
  1.066±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3
• 重原子数：
  13
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.9
• 拓扑面积：
  67.7
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (2S,4R)-4-(1,3-dithian-2-yl)-2-methylpentanal 在 15-冠醚-5 、 叔丁基锂 、 sodium hydride 、 对甲苯磺酸 作用下， 以 四氢呋喃 、 甲醇 、 六甲基磷酰三胺 、 正戊烷 为溶剂， 反应 5.0h， 生成 tert-butyl-[(E,1R,2R,5R)-1-[2-[(2R,4S)-5,5-dimethoxy-4-methylpentan-2-yl]-1,3-dithian-2-yl]-1-methoxy-5-[2-[(2S,3R)-2-[(4-methoxyphenyl)methoxy]-4-[(1S,3R,4R)-3-methoxy-4-tri(propan-2-yl)silyloxycyclohexyl]-3-methylbutyl]-1,3-dithian-2-yl]-3-methylhex-3-en-2-yl]oxy-dimethylsilane
  参考文献：
  名称：

  免疫调节剂 (-)-雷帕霉素和 (-)-27-去甲氧基雷帕霉素的统一全合成：C(21-42) 周边的构建

  摘要：

  强效天然免疫调节剂 (-)-雷帕霉素 (1) 和 (-)-27-去甲氧基雷帕霉素 (2) 的全合成已通过统一、高度收敛的合成策略实现。这两个目标都是从共同的构建块 A-E 精心设计的，后者以十克的数量提供。在此，我们介绍了 ABC 北部周边 1 和 2 的建设。随附的论文描述了南部周边 DE 段的准备、三烯和脱保护模型研究以及合成企业的完成。该方法的显着特点包括三取代烯烃的立体选择性 σ 键结构和通过有效的二噻烷偶联结合高级中间体。

  DOI：

  10.1021/ja963066w
• 作为产物：
  描述：

  (1E,3Z)-1-甲氧基-2-甲基-3-(三甲基硅氧基)-1,3-戊二烯 在 palladium on activated charcoal 、 palladium/alumina lead(IV) acetate 、 三氟化硼乙醚 、 氢气 、 potassium acetate 、 二异丁基氢化铝 、 对甲苯磺酸 、 magnesium bromide 作用下， 以 四氢呋喃 、 乙醚 、 正己烷 、 二氯甲烷 、 乙酸乙酯 、 乙腈 、 苯 为溶剂， -78.0~23.0 ℃ 、344.73 kPa 条件下， 反应 113.08h， 生成 (2S,4R)-4-(1,3-dithian-2-yl)-2-methylpentanal
  参考文献：
  名称：

  Application of the Ibuka-Yamamoto reaction to a problem in stereochemical communication: a strategy for the stereospecific synthesis and stabilization of the triene substructure of rapamycin through sulfone substitution

  摘要：

  The aldehydes 49 and 55 corresponding to carbons 13-30 in a projected total synthesis of rapamycin have been synthesized. The LACDAC technology was used to elaborate dithiane enal 5. The aldehyde 4 was synthesized from D-(+)-glucose. A critical element of that construction involved cuprate-induced displacement reactions on enoates 7 and 8 (see formation of esters 9a and 9b) to correlate the stereochemistry of carbons 8 and 12. The feasibility of conducting a Nozaki-Kishi reaction between iodosulfone 6 and aldehyde 4 was a major simplification. Julia coupling between sulfone 5 and aldehyde 43 was followed by acetylation and elimination of acetic acid. The triene sulfone 54 was obtained stereospecifically. The C4 sulfone linkage is a considerable stabilizing element on the C1-C6 triene. Its presence allows for removal of the dithiane linkage (see formation of aldehyde 55). Cleavage of the sulfone is accomplished with sodium analgam without reduction of an aldehyde function at C30 (see formation of 49).

  DOI：

  10.1021/jo00020a027

文献信息

• Total Synthesis and Structural Elucidation of Azaspiracid-1. Construction of Key Building Blocks for Originally Proposed Structure
  作者：K. C. Nicolaou、Petri M. Pihko、Federico Bernal、Michael O. Frederick、Wenyuan Qian、Noriaki Uesaka、Nicole Diedrichs、Jürgen Hinrichs、Theocharis V. Koftis、Eriketi Loizidou、Goran Petrovic、Manuela Rodriquez、David Sarlah、Ning Zou

  DOI：10.1021/ja0547477

  日期：2006.2.1

  required for the total synthesis of the proposed structure of azaspiracid-1 (1a) are described. Key steps include a TMSOTf-induced ring-closing cascade to form the ABC rings of tetracycle 65, a neodymium-catalyzed internal aminal formation for the construction of intermediate 98, and a Nozaki-Hiyama-Kishi coupling to assemble the required carbon chain of fragment 100. The synthesized fragments, obtained stereoselectively

  描述了对所提出的 azaspiracid-1 (1a) 结构进行全合成所需的三个关键构件（65、98 和 100）的合成。关键步骤包括 TMSOTf 诱导的闭环级联以形成四环 65 的 ABC 环、用于构建中间体 98 的钕催化的内部氨基形成以及用于组装所需片段碳链的 Nozaki-Hiyama-Kishi 偶联100. 以两种对映体形式立体选择性地获得的合成片段有望构建所有四种立体异构体，作为 azaspiracid-1 (1a-d) 的可能结构，从而可以确定相对和绝对立体化学的天然产物。
• A Unified Total Synthesis of the Immunomodulators (−)-Rapamycin and (−)-27-Demethoxyrapamycin:  Assembly of the Common C(1−20) Perimeter and Final Elaboration
  作者：Amos B. Smith、Stephen M. Condon、John A. McCauley、Johnnie L. Leazer、James W. Leahy、Robert E. Maleczka

  DOI：10.1021/ja963067o

  日期：1997.2.1

  The potent, naturally occurring immunomodulators (−)-rapamycin (1) and (−)-27-demethoxyrapamycin (2) have been synthesized via a unified and highly convergent strategy. In the preceding paper we discussed the construction of common building blocks A−C and their linkage to provide the C(21−42) segments of 1 and 2. Herein we describe model studies of triene generation and hydroxyl deprotection, the preparation

  有效的天然免疫调节剂 (-)-雷帕霉素 (1) 和 (-)-27-去甲氧基雷帕霉素 (2) 已通过统一且高度趋同的策略合成。在前面的论文中，我们讨论了通用结构单元 A-C 的构建及其连接，以提供 1 和 2 的 C(21-42) 链段。在此我们描述了三烯生成和羟基脱保护的模型研究、制备和偶联构建块 D 和 E，通过 ABC 和 DE 子目标的联合形成大环的两步协议，以及完成总合成。27-去甲氧基雷帕霉素 (2) 的合成证实了指定的结构。
• Rapamycin synthetic studies. 2. Elaboration of the C(10)-C(26) perimeter
  作者：Amos B. Smith、Robert E. Maleczka、Johnnie L. Leazer、James W. Leahy、John A. McCauley、Stephen M. Condon

  DOI：10.1016/s0040-4039(00)73280-1

  日期：1994.7

  The C(10)-C(26) subunit of the potent immunomodulator rapamycin has been constructed via a highly convergent approach, exploiting palladium-mediated σ-bond formation to generate the sensitive triene moiety.

  有效的免疫调节剂雷帕霉素的C（10）-C（26）亚基已通过高度收敛的方法构建，利用钯介导的σ键形成来生成敏感的三烯部分。
• Total Synthesis of the Proposed Azaspiracid-1 Structure, Part 1: Construction of the Enantiomerically Pure C1–C20, C21–C27, and C28–C40 Fragments
  作者：K. C. Nicolaou、Yiwei Li、Noriaki Uesaka、Theocharis V. Koftis、Stepan Vyskocil、Taotao Ling、Mugesh Govindasamy、Wenyuan Qian、Federico Bernal、David Y.-K. Chen

  DOI：10.1002/anie.200351825

  日期：2003.8.11
• Application of the Ibuka-Yamamoto reaction to a problem in stereochemical communication: a strategy for the stereospecific synthesis and stabilization of the triene substructure of rapamycin through sulfone substitution
  作者：Sui Hui Chen、Raymond F. Horvath、Jesus Joglar、Matthew J. Fisher、Samuel J. Danishefsky

  DOI：10.1021/jo00020a027

  日期：1991.9

  The aldehydes 49 and 55 corresponding to carbons 13-30 in a projected total synthesis of rapamycin have been synthesized. The LACDAC technology was used to elaborate dithiane enal 5. The aldehyde 4 was synthesized from D-(+)-glucose. A critical element of that construction involved cuprate-induced displacement reactions on enoates 7 and 8 (see formation of esters 9a and 9b) to correlate the stereochemistry of carbons 8 and 12. The feasibility of conducting a Nozaki-Kishi reaction between iodosulfone 6 and aldehyde 4 was a major simplification. Julia coupling between sulfone 5 and aldehyde 43 was followed by acetylation and elimination of acetic acid. The triene sulfone 54 was obtained stereospecifically. The C4 sulfone linkage is a considerable stabilizing element on the C1-C6 triene. Its presence allows for removal of the dithiane linkage (see formation of aldehyde 55). Cleavage of the sulfone is accomplished with sodium analgam without reduction of an aldehyde function at C30 (see formation of 49).