Krohn, Karsten; Budianto, Emil; Floerke, Ulrich, Liebigs Annalen der Chemie, 1992, # 9, p. 911 - 920
作者:Krohn, Karsten、Budianto, Emil、Floerke, Ulrich、Hausen, Bjoern M.
DOI:——
日期:——
Terpenoids—XCVII
作者:B.N. Joshi、K.K. Chakravarti、S.C. Bhattacharyya
DOI:10.1016/0040-4020(67)85075-0
日期:1967.1
Reaction of N-lithioethylenediamine on the 11-membered monocyclic sesquiterpenoids zerumbone (I) and zerumbol (II) has been studied. Zerumbone undergoes polymerization in the presence of the reagent whereas zerumbol via transannular cyclization-oxidation is converted to the bicyclicketone, 2-keto-Δ5;6,4;11-bicyclo (6:3:0) undecane (VII). Its structure has been rigorously established by chemical degradation
Further acidic constituents and neutral components of pinus massoniana Resin
作者:H Cheung
DOI:10.1016/s0040-4020(01)88015-7
日期:1993.9.3
The resin of Pinus massoniana Lamb. contains, in addition to those isolated in an earlier study, two new diterpene acids, viz. 15-hydroxy-7,13-abietadien-12-on-18-oic acid and 8(14)-podocarpen-7,13-dion-18-oic acid, and three new plant products, viz. 2β-hydroxy-8,11,13-abietatrien-18-oic acid, 7,13,15-abietatrien-18-oic acid, and 13-hdyroxy-8,11,13-podocarpatrien-18-oic acid. The above acids and four