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
Spongistatin synthetic studies. 3. Construction of the C(1–17) spiroketal
作者:Amos B. Smith、Quyan Lin、Kiyoshi Nakayama、Armen M. Boldi、Christopher S. Brook、Mark D. McBriar、William H. Moser、Masao Sobukawa、Linghang Zhuang
DOI:10.1016/s0040-4039(97)10501-9
日期:1997.12
A convergent synthesis of the C(1–17) AB-ring subunit of the spongistatins, exceedingly scarce and highly antimitotic polyether macrolides, has been achieved via a one-flask dithiane bisalkylation, stereocontrolled spiroketalization, and Julia sulfone coupling/methylenation.