作者:Steven V. Ley、Miles N. Tackett、Matthew L. Maddess、James C. Anderson、Paul E. Brennan、Michael W. Cappi、Jag P. Heer、Céline Helgen、Masakuni Kori、Cyrille Kouklovsky、Stephen P. Marsden、Joanne Norman、David P. Osborn、María Á. Palomero、John B. J. Pavey、Catherine Pinel、Lesley A. Robinson、Jürgen Schnaubelt、James S. Scott、Christopher D. Spilling、Hidenori Watanabe、Kieron E. Wesson、Michael C. Willis
DOI:10.1002/chem.200801656
日期:2009.3.9
Rapamycin (1) is a macrocyclic natural product, established as a potent immunosuppressant and currently of interest to the scientific community as the framework for a series of novel anticancer drugs. Extensive studies have culminated in a new convergent totalsynthesis of 1, which features a number of group‐derived methodologies and an unusual catechol‐templating strategy for the construction of the
Towards the synthesis of the C37-C42 fragment of rapamycin: intramolecular reactions of allyl silanes with oxonium ions generated from α-alkoxy sulfones.
作者:Steven V. Ley、Cyrille Kouklovsky
DOI:10.1016/s0040-4020(01)80798-5
日期:1994.1
A new method for the formation of methylene cyclohexane derivatives has been developed, using intramolecular trapping by allyl silanes of oxonium ions generated from α-alkoxysulfones. These acyclic precursors were prepared by quenching the anion of methoxymethyl phenyl sulfone 2 with various electrophiles containing the allyl silane moiety. When a β-substituent is present, the stereochemical outcome