A totalsynthesis of (+)-perrottetianal A (1), one of the sacculatane diterpenes, has been achieved; the absolute stereochemistry of (1) is thus established as 4S,5S,10R.
HAGIWARA, HISAHIRO;UDA, HISASHI, J. CHEM. SOC. CHEM. COMMUN.,(1987) N 18, 1351-1353
作者:HAGIWARA, HISAHIRO、UDA, HISASHI
DOI:——
日期:——
Total synthesis of (+)-perrottetianal A
作者:Hisahiro Hagiwara、Hisashi Uda
DOI:10.1039/p19900001901
日期:——
from an optically active Wieland–Miescherketoneanalogue. The ethylene glycol monoacetal of the starting material was converted into the trans-decalone containing the required C-5 and -8a reactant groups via an eight-step reaction sequence. After introduction of a methyl group and then transformation of the angularhydroxymethyl functionality to the protected aldehyde group, an additional α,β-unsaturated
Abstract Perrottetianal A and perrottetianal B, two newditerpene dialdehydes and a new ent -labdane-type diterpene diol have been isolated from the liverwort Porellaperrottetiana and their structures have been elucidated by the chemical and spectral evidence.
摘要 Perrottetianal A 和perrottetianal B、两种新的二萜二醛和一种新的ent-labdane 型二萜二醇已从地草Porella perrottetiana 中分离出来,并通过化学和光谱证据阐明了它们的结构。