摘要
Two novel epimeric eremophilane sesquiterpenes, 7β-H-3α-angeloyl-9(10)-ene-11, 12-epoxy-8-oxoeremophilane (1) and 7β-H-3α-angeloyl-9(10)-ene-11, 12-epoxy-8-oxoeremophi- lane (2) were isolated from the methanol extract of the flower of Cacalia tangutica (Franch.) Hand-Mazz. Their structures were characterized by 1D-, 2D-NMR (1H-1H COSY, HMQC, HMBC, 1H-1H NOESY) and HRESI-MS techniques.
基金
supported by Foundation of“Bairen Jihua”of CAS in 2000
NNSFC(No.20372029 and 20475057).
