Novel agarofuran sesquiterpene, celahin D from Celastrus hindsii Benth.

A novel agarofuran sesquiterpene polyol eater, 1 beta,2 beta,6 alpha,15 bet a-tetracetoxy-8 beta,9 alpha-dibenzoyloxy-beta-dihydroagarofuran (celahin D ) (1), two known analogues of 1,1 beta-acetoxy-8 beta,9 alpha-dibenzoyloxy- 4 alpha,6 alpha-dihydroxy-2 beta(alpha-methylbutanoyloxy)-beta-dihydroagaro furan (2) and 1 beta-acetoxy-8 beta,9 alpha-dibenzoyloxy-6 alpha-hydroxy-2 beta(alpha-methylbutanoyloxy)-beta-dihydroagarofuran (3), and a known cytot oxic sesquiterpene pyridine alkaloid, emarginatine E (4) were isolated from the stems of Celastrus hindsii BENTH. Three known triterpenes, loranthol ( 5), lupenone (6) and friedelinol (7) were also obtained from the titled pla nt. Structural elucidation of compound 1 was established by 2D NMR spectra.