Teikaside A, one of the pregnane glycosides of Trachelospermum asiaticum (Apocynaceae), was isolated and its structure was determined to be 3-O-(β-D-digitalosyl)-20-O-(β-D-glucosyl-β-D-sarmentosyl)-3β, 17α, 20α-trihydroxy-5α-pregn-6-ene. In view of the structural similarity to the glycosides in Bei-Wujiapi, which are known to induce the potentiation of the nerve growth factor, similar physiological activity is expected in teikaside A.
                                    Teikaside A是亚洲爪哇藤(夹竹桃科)中的孕
甾醇糖苷之一,经过分离并确定其结构为3-O-(β-D-
地高辛糖基)-20-O-(β-
D-葡萄糖基-β-D-梭子糖基)-3β, 17α, 20α-三羟基-5α-孕-6-烯。考虑到其与已知能够诱导神经生长因子增强的北乌药糖苷的结构相似,预计Teikaside A也具有类似的生理活性。