General access to polyhydroxylated nortropane derivatives through hetero Diels–Alder cycloadditions. Part 3: Synthesis of natural (+)-calystegine B2
作者:Thomas Faitg、Josette Soulié、Jean-Yves Lallemand、Louis Ricard
DOI:10.1016/s0957-4166(99)00204-9
日期:1999.6
Cycloaddition of chiral nitroso derivatives with cyclohepta-1,3-diene gave one single stereoisomer with an excellent selectivity. The structures including absolute configurations have been assigned by spectroscopy and X-ray crystallography. These studies have been applied to the total synthesis of the naturally occurring calystegine B2.
手性亚硝基衍生物与环庚-1,3-二烯的环加成反应产生了一种具有优异选择性的单一立体异构体。包括绝对构型在内的结构已通过光谱学和X射线晶体学确定。这些研究已经应用于天然存在的calystegine B 2的全合成。