(δR,2R,5S,6S)-δ,5-Dimethyl-6-<<<(1,1-dimethylethyl)diphenylsilyl>oxy>methyl>tetrahydro-2-pyranylbutyl acetate | 165961-39-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (δR,2R,5S,6S)-δ,5-Dimethyl-6-<<<(1,1-dimethylethyl)diphenylsilyl>oxy>methyl>tetrahydro-2-pyranylbutyl acetate
• 英文别名: [(4R)-4-[(2R,5S,6S)-6-[[tert-butyl(diphenyl)silyl]oxymethyl]-5-methyloxan-2-yl]pentyl] acetate
• CAS: 165961-39-7
• 化学式: C₃₀H₄₄O₄Si
• 分子量: 496.762
• InChiKey: YLNJMNLEVXSEAL-DZRFEFHFSA-N

物化性质

• 沸点：
  528.7±36.0 °C(Predicted)
• 密度：
  1.04±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.73
• 重原子数：
  35
• 可旋转键数：
  12
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  44.8
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (δR,2R,5S,6S)-δ,5-Dimethyl-6-<<<(1,1-dimethylethyl)diphenylsilyl>oxy>methyl>tetrahydro-2-pyranylbutyl acetate 在 吡啶 、 4-二甲氨基吡啶 、 正丁基锂 、 草酰氯 、 四丁基氟化铵 、 sodium hydride 、 二甲基亚砜 、 三乙胺 、 三苯基膦 、 lithium bromide 、 锌 、 偶氮二甲酸二乙酯 作用下， 以 四氢呋喃 、 甲醇 、 乙醇 、 二氯甲烷 、 水 、 N,N-二甲基甲酰胺 、 苯 为溶剂， 生成 [(3S,6S,7R,13S,14S,15R)-11-(benzenesulfonyl)-18-[tert-butyl(diphenyl)silyl]oxy-10-hydroxy-14-(methoxymethoxy)-3,7,13,15-tetramethyloctadec-1-en-6-yl] 4-nitrobenzoate
  参考文献：
  名称：

  Synthetic study on tautomycin. Stereocontrolled synthesis of C(1)C(18) fragment using a strategy of selective reduction of spiroketal

  摘要：

  A stereocontrolled synthesis of C(1)-C(18) fragment of tautomycin is accomplished employing asymmetric crotylboration, selective reduction of spiroketal, and addition of crotylstannane as the key steps.

  DOI：

  10.1016/s0040-4039(00)74091-3
• 作为产物：
  描述：

  (2S,3S,6R,11R)-3,11-Dimethyl-2-<<<(1,1-dimethylethyl)diphenylsilyl>oxy>methyl>-1,7-dioxaspiro<5.5>undecane 在 吡啶 、 4-二甲氨基吡啶 、 四氯化锡 、 溶剂黄146 作用下， 以 四氢呋喃 、 二氯甲烷 、 水 为溶剂， 生成 (δR,2R,5S,6S)-δ,5-Dimethyl-6-<<<(1,1-dimethylethyl)diphenylsilyl>oxy>methyl>tetrahydro-2-pyranylbutyl acetate
  参考文献：
  名称：

  Synthetic study on tautomycin. Stereocontrolled synthesis of C(1)C(18) fragment using a strategy of selective reduction of spiroketal

  摘要：

  A stereocontrolled synthesis of C(1)-C(18) fragment of tautomycin is accomplished employing asymmetric crotylboration, selective reduction of spiroketal, and addition of crotylstannane as the key steps.

  DOI：

  10.1016/s0040-4039(00)74091-3

文献信息

• Total Synthesis of Tautomycin
  作者：Masato Oikawa、Tohru Ueno、Hideaki Oikawa、Akitami Ichihara

  DOI：10.1021/jo00121a026

  日期：1995.8

  A convergent stereocontrolled synthesis of the antifungal antibiotic tautomycin, a potent protein phosphatases inhibitor, has been achieved first via key aldol coupling of two large subunits, a right-hand C-1-C-21 ketone and a left-hand aldehyde (left from C-22). The C-1-C-10 segment was synthesized through a remote stereochemical control process using a spiroketal template. After joining with the C-11-C-18 segment, the spiroketal moiety was selectively constructed. Then the right-hand C-1-C-21 ketone was synthesized via Roush asymmetric crotylboration. The left-hand aldehyde was prepared from a C-21-C-26 Segment and a dialkylmaleic anhydride segment. Completely stereoselective assemblage of the two subunits, the right-hand and the left-hand, was achieved by employing the Mukaiyama aldol reaction. Further functional group manipulations including desilylation, oxidation at C-2, and deprotection of tert-butyl ester with concomitant anhydride formation provided tautomycin which was identical with the natural product. As a preliminary study, derivatizations and degradation of the natural product were also examined to support the total synthesis.