Phenolic diterpenes from Tripterygium wilfordii var. regelii

Seven new phenolic abietane type diterpenoids: 14,19-dihydroxy-3-oxo-abieta-8, 11,13-triene; 3, 14-dihydroxy-abieta-8,11,13-triene; 14,19-dihydroxy-3,7-dioxo-abieta-8, ii, 13-triene; 18(4 --> 3)-abeo-abieta-3,8,11,13-tetraene-18-oic acid; 18(4 --> 3)-abeo-14, 15-dihydroxy-abieta-3, 8, 11, 13-tetraene-18,19-olide; 18(4 --> 3)-abeo-abieta-14,16-dihydroxy-abieta-3,8,11,13-tetraene-18,19-olide; 18(4 --> 3)-abeo-abieta-14, 17-dihydroxyabieta-3,8,11,13-tetraene-18,19-olide named triptobenzene A, B, C, D, E, F and G have been isolated from Tripterygium wilfordii var. regelii. Their structures have been established on the basis of spectroscopic evidence. (C) 1997 Elsevier Science Ltd. All rights reserved.