Synthetic studies toward bryostatin 1: preparation of a C1–C16 fragment by pyran annulation
作者:Gary E. Keck、Dennie S. Welch、Yam B. Poudel
DOI:10.1016/j.tetlet.2006.09.094
日期:2006.11
An expeditious assembly of a C(1)-C(16) subunit of bryostatin 1 is described. A pyran annulation reaction was utilized to form the B-ring by reaction of a hydroxy-allylsilane with a fully elaborated A-ring subunit. This annulation process proceeded with complete diastereoselectivity and in excellent isolated yield despite the presence of potentially sensitive functionality in the A-ring segment.