作者:John L. Wood、Brian M. Stoltz、Hans-Juergen Dietrich
DOI:10.1021/ja00146a039
日期:1995.10
initiates cycloaromatization to form bond D.9 Application of this strategy allows efficient access to both the parent aglycon (3a) and the selectively protected derivative (3c) employed in the totalsynthesis reported herein. Overall, preparation of the enantioenriched furanose 6 and aglycon unit 3c and their conversion to 1 require only 11 synthetic operations with a longest linear sequence of seven steps
Efficient Syntheses of Novel C2‘-Alkylated (±)-K252a Analogues
作者:Kazuhiko Tamaki、J. Brad Shotwell、Ryan D. White、Ioana Drutu、Dejah T. Petsch、Thao V. Nheu、Hong He、Yumiko Hirokawa、Hiroshi Maruta、John L. Wood
DOI:10.1021/ol015894m
日期:2001.5.1
[GRAPHICS]Recent efforts in our laboratories have resulted in a synthetic approach toward C2'-alkylated K252a analogues via extension of a K252a cyclofuranosylation strategy. The bis-indole-N-glycosidic coupling of 6-N-(3,4-dimethoxybenzyl)-staurosporinone (21) with a number of highly functionalized carbohydrates has given access to previously unattainable, biologically relevant analogues.
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).