Author/Authors :
Zhang، نويسنده , , Man-Li and Shi، نويسنده , , Qing-Wen and Dong، نويسنده , , Mei and Wang، نويسنده , , Yu-Fang and Huo، نويسنده , , Chang-Hong and Gu، نويسنده , , Yu-Cheng and Cong، نويسنده , , Bin and Kiyota، نويسنده , , Hiromasa، نويسنده ,
Abstract :
A novel taxane with an unprecedented hemiacetal ring between C-13 and C-9 was isolated from the needles of Taxus cuspidata. The structure was characterized as (12αH)-2α,10β-diacetoxy-5α-cinnamoyloxy-9α,13α-epoxytax-4(20)-ene-11β,13β-diol (1). This is the first example of a natural taxane with a C-13 and C-9 oxygen bridge to form an unusual 6/8/6/6-membered ring system.
