Complex Biohopanoids Synthesis: Efficient Anchoring of Ribosyl Subunits onto a C30 Hopane
作者:Weidong Pan、Chao Sun、Yongmin Zhang、Guangyi Liang、Pierre Sinaÿ、Stéphane P. Vincent
DOI:10.1002/chem.200600659
日期:2007.2.2
through a C--C bond. The biological function of biohopanoids also has to be addressed when one considers the broad diversity in both structures and functionalities found in the side chain. Moreover, the stereochemistries of some biohopanoids are still unconfirmed, due to the lack of synthetic methods to prepare them. In this study we describe an efficient methodology for the formation of the C--C bond
Synthetic studies on palmerolide C: synthesis of an advanced intermediate towards the revised structure of palmerolide C
作者:Ashik A. Sayyad、Khushboo Kaim、Krishna P. Kaliappan
DOI:10.1039/d0ob01140a
日期:——
stereoselective synthesis of the highly advanced intermediates towards the revised structure of palmerolide C and 10-epi-palmerolide C is described in this paper. The required key fragments C1–C6, C7–C14 and C15–C23 have been successfully assembled in a convergent manner to access the C1–C23 framework bearing all the five stereocenters present in the naturalproduct. The synthesis involves the Julia–Kocienski
本文描述了一种高度先进的中间体的立体选择性合成,用于修正棕榈内酯 C 和 10- epi -palmerolide C 的结构。所需的关键片段 C1-C6、C7-C14 和 C15-C23 已成功地以收敛的方式组装,以访问带有天然产物中存在的所有五个立体中心的 C1-C23 框架。该合成涉及 Julia-Kocienski 反应、山口酯化、Takai 烯化和区域选择性环氧化物开环作为关键步骤。所提出的路线是灵活的,也可以应用于结构相关的棕榈内酯的合成。
Concise syntheses of bacteriohopanetetrol and its glucosamine derivative
作者:Weidong Pan、Yongmin Zhang、Guangyi Liang、Stéphane P. Vincent、Pierre Sinaÿ
DOI:10.1039/b504558d
日期:——
This study describes the syntheses of bacteriohopanetetrol and itsglucosaminederivative through a key direct coupling of a ribose derivative to the hopane skeleton.