Enantioselective Synthesis of Altohyrtin C(Spongistatin 2): Synthesis of the AB- and CD-Spiroketal Subunits
作者:David A. Evans、Paul J. Coleman、Luiz Carlos Dias
DOI:10.1002/anie.199727381
日期:1997.1.7
Enantioselective total synthesis of altohyrtin C (spongistatin 2)
作者:David A. Evans、B.Wesley Trotter、Paul J. Coleman、Bernard Côté、Luiz Carlos Dias、Hemaka A. Rajapakse、Andrew N. Tyler
DOI:10.1016/s0040-4020(99)00438-x
日期:1999.7
The first total synthesis of a spongipyran macrolide, altohyrtin C, is described. The convergent synthesisstrategy relies on a regioselective macrolactonization, a stereoselective Wittig coupling of the two major synthetic fragments, a complex anti aldol reaction to join the C1–C15 and C16–C28 spiroketal regions, and an anomeric sulfone acylation to join the C29–C37 and C38–C43 pyran regions. The