... 122Journal of Chemistry, Vol. 42 (1), P. 122 - 124, 2004 STUDY OF DRACAENA ANGUSTIFOLIA I - NEW SPIROSTANOL SAPOGENINS FROM ROOTS AND RHIZOMES Received 1 5-1 -2 003 TRAN LE QUAN,1TRAN KIM QUI,1SHIGETOSHI ... reports the isolation and structure elucidation of these new compounds. 123II. RESULTS AND DISCUSSION Air-dried roots and rhizomes of D. angustifolia were extracted successively by refluxing MeOH, ... (25R)-spirost-5-en-3,14,17-triol (ophiogenin).3Thus, 1 was determined to be a mixture ( 1:1 ) of (25R )- and (25S)-spirost-5-en-1,3,14,17-tetrol, which were named as (25R )- and (25S)-namogenin...