(2S,3S,4S,5S)-7-Benzyloxy-2,4-dimethyl-5-triethylsilanyloxy-heptane-1,3-diol | 157220-42-3

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: (2S,3S,4S,5S)-7-Benzyloxy-2,4-dimethyl-5-triethylsilanyloxy-heptane-1,3-diol
• 英文别名: (2S,3S,4S,5S)-2,4-dimethyl-7-phenylmethoxy-5-triethylsilyloxyheptane-1,3-diol
• CAS: 157220-42-3
• 化学式: C₂₂H₄₀O₄Si
• 分子量: 396.643
• InChiKey: SUYJWRFUOKRPOP-MXNKGDRCSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.61
• 重原子数：
  27
• 可旋转键数：
  14
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.73
• 拓扑面积：
  58.9
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (2S,3S,4S,5S)-7-Benzyloxy-2,4-dimethyl-5-triethylsilanyloxy-heptane-1,3-diol 在 rhodium on alumina 咪唑 、 sodium dihydrogenphosphate 、 sodium amalgam 、 正丁基锂 、 三丁基膦 、 氨 、 氢气 、 碳酸氢钠 、 calcium 、 N,N-二异丙基乙胺 、 间氯过氧苯甲酸 作用下， 以 四氢呋喃 、 甲醇 、 乙醇 、 二氯甲烷 、 N,N-二甲基甲酰胺 、 异丙醇 为溶剂， 反应 46.6h， 生成 (2R,3R)-2-[(1S,2R,5S,6S,7R,8S)-10-Benzenesulfonyl-2-(3,4-dimethoxy-benzyloxymethoxy)-1,5,7-trimethyl-6,8-bis-triethylsilanyloxy-decyl]-5-methoxy-3-methyl-tetrahydro-furan
  参考文献：
  名称：

  Aplyronine A, a Potent Antitumor Substance of Marine Origin, Aplyronines B and C, and Artificial Analogues:  Total Synthesis and Structure−Cytotoxicity Relationships

  摘要：

  The enantioselective total synthesis of aplyronine A (1), a potent antitumor substance of marine origin, was achieved by a convergent-approach Three segments 4, 5, and 6, corresponding to the C5-C11, C21-C27, and C28-C34 portions of aplyronine A (1), were prepared using:the Evans aldol reaction and the Sharpless epoxidation as key steps. The coupling reaction of 4 with iodide 7 followed by julia olefination with sulfone 8 gave the C5-C20 segment 9, while the julia coupling reaction between segments 5 and 6 provided the C21-C34 segment 10. Julia olefination between segments 9 and 10 and the subsequent four-carbon homologation reaction led to seco acid 83, which was converted into aplyronine A (1) by Yamaguchi lactonization followed by the introduction of two amino acids. The use of the [(3,4-dimethoxybenzyl)oxy]methyl group as a protecting group for the hydroxyl at C29 was crucial for this synthesis. The enantioselective synthesis of two natural congeners, aplyronines B (2) acid C (3), was also carried out using the intermediates for the synthesis of 1, which determined the absolute stereostructures of 2 and 3 unambiguously. To study the structure-cytotoxicity relationships of aplyronines, artificial analogues of 1 were synthesized and their cytotoxicities were evaluated: the trimethylserine moiety, two hydroxyl groups, and the side-chain portion in 1 turned out to be important in the potent cytotoxicity shown by 1. Biological studies with aplyronine A (1) showed that 1 inhibited polymerization of G-actin to F-actin and depolymerized F-actin to G-actin.

  DOI：

  10.1021/jo9606113
• 作为产物：
  描述：

  (4R,5S)-3-[(2R,3S)-3-hydroxy-2-methyl-5-phenylmethoxypentanoyl]-4-methyl-5-phenyl-1,3-oxazolidin-2-one 在 咪唑 、 titanium(IV) isopropylate 、 叔丁基过氧化氢 、 copper(l) iodide 、 4 A molecular sieve 、 potassium tert-butylate 、 三甲基铝 、 二异丁基氢化铝 、 (-)-diethyl tartrate 作用下， 以 四氢呋喃 、 正己烷 、 二氯甲烷 、 N,N-二甲基甲酰胺 、 甲苯 为溶剂， 反应 7.08h， 生成 (2S,3S,4S,5S)-7-Benzyloxy-2,4-dimethyl-5-triethylsilanyloxy-heptane-1,3-diol
  参考文献：
  名称：

  Aplyronine A, a Potent Antitumor Substance of Marine Origin, Aplyronines B and C, and Artificial Analogues:  Total Synthesis and Structure−Cytotoxicity Relationships

  摘要：

  The enantioselective total synthesis of aplyronine A (1), a potent antitumor substance of marine origin, was achieved by a convergent-approach Three segments 4, 5, and 6, corresponding to the C5-C11, C21-C27, and C28-C34 portions of aplyronine A (1), were prepared using:the Evans aldol reaction and the Sharpless epoxidation as key steps. The coupling reaction of 4 with iodide 7 followed by julia olefination with sulfone 8 gave the C5-C20 segment 9, while the julia coupling reaction between segments 5 and 6 provided the C21-C34 segment 10. Julia olefination between segments 9 and 10 and the subsequent four-carbon homologation reaction led to seco acid 83, which was converted into aplyronine A (1) by Yamaguchi lactonization followed by the introduction of two amino acids. The use of the [(3,4-dimethoxybenzyl)oxy]methyl group as a protecting group for the hydroxyl at C29 was crucial for this synthesis. The enantioselective synthesis of two natural congeners, aplyronines B (2) acid C (3), was also carried out using the intermediates for the synthesis of 1, which determined the absolute stereostructures of 2 and 3 unambiguously. To study the structure-cytotoxicity relationships of aplyronines, artificial analogues of 1 were synthesized and their cytotoxicities were evaluated: the trimethylserine moiety, two hydroxyl groups, and the side-chain portion in 1 turned out to be important in the potent cytotoxicity shown by 1. Biological studies with aplyronine A (1) showed that 1 inhibited polymerization of G-actin to F-actin and depolymerized F-actin to G-actin.

  DOI：

  10.1021/jo9606113

文献信息

• Synthetic Studies on Aplyronine A, a Potent Antitumor Substance of Marine Origin: Stereocontrolled Synthesis of the C21–C34 Segment
  作者：Hideo Kigoshi、Makoto Ojika、Kiyotake Suenaga、Tsuyoshi Mutou、Junko Hirano、Akira Sakakura、Takeshi Ogawa、Masanori Nisiwaki、Kiyoyuki Yamada

  DOI：10.1016/0040-4039(94)88035-2

  日期：1994.2

  The C21–C34 segment 2 of aplyronine A (1), a potent antitumor substance of marine origin, was synthesized enantioselectively in 25 steps (17% overall yield) from imide 11.

  丙烯醛A（1）的C21–C34片段2是一种有效的海洋来源抗肿瘤物质，是由酰亚胺11以25个步骤（总收率17％）对映选择性合成的。