Spongipyran synthetic studies. Total synthesis of (+)-spongistatin 2
作者:Amos B. Smith、Qiyan Lin、Victoria A. Doughty、Linghang Zhuang、Mark D. McBriar、Jeffrey K. Kerns、Armen M. Boldi、Noriaki Murase、William H. Moser、Christopher S. Brook、Clay S. Bennett、Kiyoshi Nakayama、Masao Sobukawa、Robert E. Lee Trout
DOI:10.1016/j.tet.2009.04.001
日期:2009.8
stereogenicity in the CD spiroketal; use of sulfone addition/Julia methylenation sequences to unite the AB and CD fragments and introduce the C(44)–C(51) side chain; and fragment union and final elaboration to (+)-spongistatin 2 (2) exploiting Wittig olefination to unite the advanced ABCD and EF fragments, followed by regioselective Yamaguchi macrolactonization and global deprotection. Correction of the CD spiro