摩熵化学
数据库官网
小程序
打开微信扫一扫
首页 分子通 化学资讯 化学百科 反应查询 关于我们
请输入关键词

Benzoic acid (2S,3S,4R)-2-bromomethyl-4,6-dimethoxy-tetrahydro-pyran-3-yl ester | 674769-31-4

中文名称
——
中文别名
——
英文名称
Benzoic acid (2S,3S,4R)-2-bromomethyl-4,6-dimethoxy-tetrahydro-pyran-3-yl ester
英文别名
——
Benzoic acid (2S,3S,4R)-2-bromomethyl-4,6-dimethoxy-tetrahydro-pyran-3-yl ester化学式
CAS
674769-31-4
化学式
C15H19BrO5
mdl
——
分子量
359.217
InChiKey
YVITTZHPFMWJNJ-VMXNZORSSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

计算性质

  • 辛醇/水分配系数(LogP):
    2.38
  • 重原子数:
    21.0
  • 可旋转键数:
    5.0
  • 环数:
    2.0
  • sp3杂化的碳原子比例:
    0.53
  • 拓扑面积:
    53.99
  • 氢给体数:
    0.0
  • 氢受体数:
    5.0

上下游信息

  • 上游原料
    中文名称 英文名称 CAS号 化学式 分子量

反应信息

点击查看最新优质反应信息

文献信息

  • Synthetic studies toward rapamycin: a solution to a problem in chirality merger through use of the Ireland reaction
    作者:Matthew J. Fisher、Cheryl D. Myers、Jesus Joglar、Shu Hui Chen、Samuel J. Danishefsky
    DOI:10.1021/jo00020a026
    日期:1991.9
    A program directed toward a total synthesis of rapamycin is described. This paper reports the synthesis of enoate 36, a fragment that would correspond to carbons 28-49 of rapamycin. The two building blocks required to reach 36 were allylic alcohol 5 and acid 6. The former was obtained in a straightforward way from D-(+)-glucose. The route passed through a 5,6-methylene derivative (see structure 12) that underwent Ferrier transformation to the hydroxycyclohexanone derivative 13. The acid 6 was built from aldehyde 15. An addition reaction of allyltrimethylsilane to 15 and a subsequent addition of crotylboronate 18 to aldehyde 17 were the key steps in the chain extension leading to the acid. The central issue of the synthesis was the merging of two chiral sectors (see A and B) to produce an ensemble in which the achiral spacer element consists of a single methylene carbon, C39. This problem was solved by establishing an ester bond between 5 and 6. The strategic C40-C39 carbon-carbon bond was generated by application of the Ireland ester enolate rearrangement. The extraneous carboxyl group (see structure 28) was removed by photolysis of the N-hydroxyphthalimide ester (see transformation 30 --> 31).
查看更多