作者:Ryosuke Munakata、Hironori Katakai、Tatsuo Ueki、Jun Kurosaka、Ken-ichi Takao、Kin-ichi Tadano
DOI:10.1021/ja038732p
日期:2003.12.1
The first total synthesis of (+)-macquarimicin A (1), a novel inhibitor of neutral sphingomyelinase (N-SMase) with antiinflammatory activity, has been accomplished. The present work determined the absolute configuration of (+)-1 and revised the C(2)-C(3) geometry to be Z. The synthesis features a transannular Diels-Alder reaction, which constructed the tetracyclic framework stereoselectively, and a convergent and efficient synthetic pathway, which afforded (+)-macquarimicin A (1) in 27 steps (longest linear sequence) with 9.9% overall yield.