Jampani B H, Anil K M, Balakrishna S. A natural phenolic lignan fromTinospora cordifolia Miers[J]. J Chem Soc Perkin Trans 1, 1986, 7: 1181-11 85.
[3]
Estevez-Braun A, Estevez-Reyes R, Gonzalez-Perez J A, et al.Bustaliol and Busalicifol, two new tetrahydrofuran lignans from Bupleurum sal icifolium[J]. Journal of Natural Product, 1995, 58(6): 887-892.