作者:Rogelio Pereda-Miranda、Marta García、Guillermo Delgado
DOI:10.1016/0031-9422(90)87117-d
日期:1990.1
Abstract The absolute stereochemistry of 4-deacetoxy-10- epi -olguine, a six-membered α,β-unsaturated C 12 -lactone isolated from Hyptis oblongifolia , has been established as 6 R -[5 R ,6 S -(diacetyloxy)-1 R ,2 S -(epoxy)-3 E -heptenyl]-5,6-dihydro-2H-pyran-2-one. The structural elucidation of three new bioactive α-pyrones, minor constituents of the aerial parts of this species, has been performed
摘要 4-deacetoxy-10-epi-olguine 是一种从 Hyptis oblongifolia 中分离的六元 α,β-不饱和 C 12 -内酯,其绝对立体化学已确定为 6 R -[5 R ,6 S -(diacetyloxy) -1 R ,2 S -(环氧)-3 E -庚烯基]-5,6-二氢-2H-吡喃-2-one。已经对三种新的生物活性 α-吡喃酮(该物种地上部分的次要成分)进行了结构解析。它们的结构被阐明为 6 R -[5 R ,6 S -(二乙酰氧基)-1 R -(羟基)-2 R -(甲氧基)-3 E -庚烯基]-5,6-二氢-2 H -吡喃- 2-one, 6 R -[5 R ,6 S -(diacetyloxy)-1 S,2 R -(dihydroxy)-3 E-heptenyl]-5,6-dihydro-2 H -pyran-2-one 及其相应的二乙酰化产物,6