摘要:
                                摘要 从锯齿石斛中分离得到四种新的二萜:lagascol ( 4 , ent -8,5- Friedo pimar-5-ene-15 S ,16-diol), tobarrol ( 8 , ent -15-beyerene-12α,17- diol)、benuol (12, ent -15-beyerene-7α,17-diol) 和serradiol (18, ent -16 R -atis-13-ene-16,17-diol)。先前已知的二萜lagascatriol (1, ent -8,5-friedo pimar-5-ene-11β,15 S,16-triol), jativatriol (2, ent -15-beyerene-1β,12α,17-triol), conchitriol ( 3 , ent -15-beyerene-7α,12α,17-triol) 和 sideritol