Design and Implementation of an Efficient Synthetic Approach to Furanosylated Indolocarbazoles: Total Synthesis of (+)- and (−)-K252a
作者:John L. Wood、Brian M. Stoltz、Hans-Jürgen Dietrich、Derek A. Pflum、Dejah T. Petsch
DOI:10.1021/ja9713035
日期:1997.10.1
The first totalsynthesis of the natural product (+)-K252a (2) has been achieved in 12 steps from commercially available materials, with a longest linear sequence of seven steps and an overall yield of 21%. The synthetic strategy employs novel rhodium carbenoid chemistry in the construction of both the indolocarbazole aglycon (4) and the carbohydrate moiety (9).