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- [41] STUDIES ON REACTIONS OF 2-BROMO-3-KETOTRITERPENOIDS .3. REDUCTION OF 2-ALPHA-BROMO AND 2,2-DIBROMO DERIVATIVES OF LUPANONE AND METHYL DIHYDROBETULONATE WITH LITHIUM ALUMINUM-HYDRIDE AND SODIUM-BOROHYDRIDE INDIAN JOURNAL OF CHEMISTRY SECTION B-ORGANIC CHEMISTRY INCLUDING MEDICINAL CHEMISTRY, 1993, 32 (11): : 1178 - 1180