摘要:
摘要 从Casearia corymbosa 的茎皮中分离得到15 种二萜。其中九个是新的,根据光谱数据和与已知化合物的比较,已被表征为(相对立体化学)ent -2β-hydroxy-3,4-dihydro-4α-isozuelanin, ent -3,4-dihydro -4α-isozuelanin-2β-acetate, ent -3,4-dihydro-4α-isozuelanin-2β-(2-methyl)-butyrate, 18-hydroxy-2-oxo-8β,9β,10α-cleroda-3,13 (16),14-triene, 18,19α-diacetoxy-2-oxo-8β, 9β,10α-cleroda-3,13(16),14-triene, ent -6β-hydroxyisozuelanin-2β-(2-methyl)丁酸盐,ent -6β-hydroxyis