(2R)-3-[(tert-butyldiphenylsilyl)oxy]-2-(4-methoxybenzyloxy)propanal | 866454-44-6

• 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: (2R)-3-[(tert-butyldiphenylsilyl)oxy]-2-(4-methoxybenzyloxy)propanal
• 英文别名: (2R)-3-[tert-butyl(diphenyl)silyl]oxy-2-[(4-methoxyphenyl)methoxy]propanal
• CAS: 866454-44-6
• 化学式: C₂₇H₃₂O₄Si
• 分子量: 448.634
• InChiKey: CAMOSNJGJFAFFH-DEOSSOPVSA-N

物化性质

• 沸点：
  510.4±50.0 °C(Predicted)
• 密度：
  1.10±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.36
• 重原子数：
  32
• 可旋转键数：
  11
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.3
• 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：

  (2R)-3-[(tert-butyldiphenylsilyl)oxy]-2-(4-methoxybenzyloxy)propanal 在 4-二甲氨基吡啶 、 2,2,6,6-tetramethyl-piperidine-N-oxyl 、 sodium tetrahydroborate 、 碘苯二乙酸 、 (1-cyano-2-ethoxy-2-oxoethylidenaminooxy)dimethylaminomorpholinocarbenium hexafluorophosphate 、 sodium methylate 、 四丁基碘化铵 、 O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 、 氟化氢吡啶 、 N,N-二异丙基乙胺 、 2,4,6-三叔丁基嘧啶 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 为溶剂， 反应 199.0h， 生成 benzyl (1-O-palmityl-2-O-(4-methoxybenzyl)-sn-glyceryl 2,3,4-tri-O-benzyl-α-D-glucopyranosid)uronate
  参考文献：
  名称：

  Synthesis, Structural Elucidation, And Biochemical Analysis of Immunoactive Glucuronosyl Diacylglycerides of Mycobacteria and Corynebacteria

  摘要：

  Glucuronosyl diacylglycerides (GlcAGroAc(2)) are functionally important glycolipids and membrane anchors for cell wall lipoglycans in the Corynebacteria. Here we describe the complete synthesis of distinct acyl-isoforms of GlcAGroAc(2) bearing both acylation patterns of (R)-tuberculostearic acid (C-19:0) and palmitic acid (C-16:0) and their mass spectral characterization. Collision-induced fragmentation mass spectrometry identified characteristic fragment ions that were used to develop "rules" allowing the assignment of the acylation pattern as C-19:0 (sn-1), C-16:0 (sn-2) in the natural product from Mycobacterium smegmatis, and the structural assignment of related C-18:1 (sn-1), C-16:0 (sn-2) GlcAGroAc(2) glycolipids from M. smegmatis and Corynebacterium glutamicum. A synthetic hydrophobic octyl glucuronoside was used to characterize the GDP-mannose-dependent mannosyltransferase MgtA from C. g/utamicum that extends GlcAGroAc(2). This enzyme is an Mg2+/Mn2+-dependent metalloenzyme that undergoes dramatic activation upon reduction with dithiothreitol.

  DOI：

  10.1021/jo302508e
• 作为产物：
  描述：

  (-)-methyl-(2R)-3-(tert-butyldiphenylsilyloxy)-2-hyrdoxypropanoate 在 三氟化硼四氢呋喃络合物 、 二异丁基氢化铝 作用下， 以 正己烷 、 二氯甲烷 、 环己烷 为溶剂， 反应 1.0h， 生成 (2R)-3-[(tert-butyldiphenylsilyl)oxy]-2-(4-methoxybenzyloxy)propanal
  参考文献：
  名称：

  Stereochemical Assignment of the C₁−C₆ Fragment of Psymberin by Synthesis and Natural Product Degradation

  摘要：

  Psymberin is a sponge-derived natural product that shows striking selectivity as a cytotoxic agent. Conformational mobility has precluded stereochemical assignment for the acyl fragment of this molecule (psymberic acid) by NMR. Herein we report stereoselective syntheses of all four stereoisomers of psymberic acid. A comparison of the acid-mediated cyclization products of these compounds to the product of psymberin's acidic methanolysis showed the stereochemical configuration of this fragment to be 4S, 5S.

  DOI：

  10.1021/ol051396s

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 Bidirectional S_E′ Strategy for 1,5-<i>syn</i> and 1,5-<i>anti</i> Stereocontrol toward the Synthesis of Complex Polyols
  作者：David R. Williams、Christopher D. Claeboe、Bo Liang、Nicolas Zorn、Nicholas S. C. Chow

  DOI：10.1021/ol3015682

  日期：2012.8.3

  Studies report a bidirectional SE′ strategy applicable for the stereocontrolled synthesis of nonracemic 1,5-syn and 1,5-anti diols and their derivatives. Nonracemic 1,3,2-diazaborolidine auxiliaries are incorporated by chemoselective tin–boron exchange to provide reactive allylic boranes. The convergent pathway utilizes sequential reactions with two aldehydes producing stereochemical outcomes from

  研究报告了一种双向 S E ' 策略，适用于非外消旋 1,5- syn和 1,5- anti二醇及其衍生物的立体控制合成。非外消旋 1,3,2-二氮杂硼烷助剂通过化学选择性锡-硼交换加入，以提供反应性烯丙基硼烷。收敛途径利用与两种醛的顺序反应，分别从循环、闭合和开放过渡态偏好产生立体化学结果。peloruside A片段16的合成分四步完成，由容易获得的醛9和13 组成。
• Stereochemical Assignment of the C₁−C₆ Fragment of Psymberin by Synthesis and Natural Product Degradation
  作者：Michael E. Green、Jason C. Rech、Paul E. Floreancig

  DOI：10.1021/ol051396s

  日期：2005.9.1

  Psymberin is a sponge-derived natural product that shows striking selectivity as a cytotoxic agent. Conformational mobility has precluded stereochemical assignment for the acyl fragment of this molecule (psymberic acid) by NMR. Herein we report stereoselective syntheses of all four stereoisomers of psymberic acid. A comparison of the acid-mediated cyclization products of these compounds to the product of psymberin's acidic methanolysis showed the stereochemical configuration of this fragment to be 4S, 5S.
• Synthesis, Structural Elucidation, And Biochemical Analysis of Immunoactive Glucuronosyl Diacylglycerides of Mycobacteria and Corynebacteria
  作者：Benjamin Cao、Xingqiang Chen、Yoshiki Yamaryo-Botte、Mark B. Richardson、Kirstee L. Martin、George N. Khairallah、Thusita W.T. Rupasinghe、Roisin M. O’Flaherty、Richard A.J. O’Hair、Julie E. Ralton、Paul K. Crellin、Ross L. Coppel、Malcolm J. McConville、Spencer J. Williams

  DOI：10.1021/jo302508e

  日期：2013.3.15

  Glucuronosyl diacylglycerides (GlcAGroAc(2)) are functionally important glycolipids and membrane anchors for cell wall lipoglycans in the Corynebacteria. Here we describe the complete synthesis of distinct acyl-isoforms of GlcAGroAc(2) bearing both acylation patterns of (R)-tuberculostearic acid (C-19:0) and palmitic acid (C-16:0) and their mass spectral characterization. Collision-induced fragmentation mass spectrometry identified characteristic fragment ions that were used to develop "rules" allowing the assignment of the acylation pattern as C-19:0 (sn-1), C-16:0 (sn-2) in the natural product from Mycobacterium smegmatis, and the structural assignment of related C-18:1 (sn-1), C-16:0 (sn-2) GlcAGroAc(2) glycolipids from M. smegmatis and Corynebacterium glutamicum. A synthetic hydrophobic octyl glucuronoside was used to characterize the GDP-mannose-dependent mannosyltransferase MgtA from C. g/utamicum that extends GlcAGroAc(2). This enzyme is an Mg2+/Mn2+-dependent metalloenzyme that undergoes dramatic activation upon reduction with dithiothreitol.