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.