Diterpenoid ginkgolides

As the result of a detailed n.m.r. analysis of bilobalide and its derivatives, Nakanishi et al have deduced the structure (55) for this unique sesquiterpenoid. In the light of the biosynthetic studies on the diterpenoid, ginkgolide B (56), ... [Pg.72]

Finally, it has been reported that a sesquiterpene compound, bilobalid A, isolated from the leaves of the Ginkgo tree, appears to have structural similarities with the unusual diterpenoid ginkgolides, in which one of the y-lactone rings (ring f) has been removed. [Pg.123]

Ginkgolide A (diterpenoid) Ginkgo biloba (maidenhair tree) (Ginkgoaceae) [root bark, leaf] [Reduces expression of adrenocortical mitochondrial PBZ-R thence corticosteroid synthesis AI, anti-asthmatic, antistress, insect antifeedant, bitter, neuroprotective]... [Pg.478]

Ginkgolide B (diterpenoid) Ginkgo biloba (maidenhair tree) [Reduces expression of... [Pg.478]

The MEP pathway is the starting material of major plant terpenoids of economic value e.g., monoterpenes from essential oils, diterpenoids with potent biologic activity (taxol, ginkgolides), vitamins (tocopherol), or vitamin precursors (carotenoids). The first attempts to overexpress some of its genes (especially dxs or dxr) led to enhanced carotenoid production in tomato (18) or monoterpenes in mint (19). [Pg.1941]

Sakabe N, Takada S, Okahe K (1967) The structure of ginkgolide A, a novel diterpenoid trilactone. Chem Commun (Lond) 6 259-261. doi 10.1039/C19670000259... [Pg.4725]

Nakanishi K, Habaguchi K 1971 Biosynthesis of ginkgolide B, its diterpenoid nature, and origin of the tert-butyl group. J Am Chem Soc 93 3546-3547... [Pg.803]

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