3-Methoxyflavones with unusual b-ring substitution from two species of Notholaena

Structural determination of a new 2(3 →

Structural determination of a new 2(3 → 20)abeotaxane with an unusual 13β-substitution pattern and a new 6/8/6-ring taxane from Taxus cuspidata

✍ Changhong Huo; Xiaohui Su; Xing Li; Xiping Zhang; Cunfang Li; Yufang Wang; Qingw 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 130 KB

## Abstract A new 2(3 → 20)__abeo__taxane with an unusual 13β‐substitution pattern and a new 6/8/6‐ring taxane were isolated from the methanol extract of the needles of __Taxus cuspidata__. The structures were established as 2α,7β‐diacetoxy‐5α,10β,13β‐trihydroxy‐2(3 → 20)__abeo__taxa‐4(20), 11‐dien