Ginkgolide B

개요Ginkgolide B is an important active ingredient derived from the leaf extract of Ginkgo biloba (Ginkgo biloba leaf extract, GBLPE), a member of the Ginkgoaceae family. It belongs to the class of terpenoid ketones and is a diterpene trilactone containing six five-membered rings in its molecular structure. The molecule comprises a spiro[4.4]nonane skeleton and a tetrahydrofuran ring, and is readily soluble in solvents such as ethyl acetate, methanol, ethanol, and dimethyl sulfoxide.

역사The leaf of Ginkgo biloba is sweet, bitter, astringent, and mild. With activating blood circulation to remove blood stasis, dredging collaterals, relieving pain, and asthma, it is applied for treating blood stasis, chest pain, stroke, lung deficiency cough, and hyperlipidemia.As early as in the 1930s, scientists began to study ginkgo and harvest a variety of ginkgolide . Ginkgolide B was isolated and its structure illustrated by Wan Shan etal. in 1967. Subsequently, it was synthesized by Corey etal. in 1988. The preparation of effective components of Ginkgo biloba has been listed at home and abroad with development.The Ginkgo biloba extract consisting of ticlopidine is widely used in overseas market for the treatment of cerebral infarction. Intravenous injection of ginkgolide B is applied for the treatment of inflammation, but the project has been in the state, and there is no progress in it for many years. In addition, whether other extract of Ginkgo biloba can be used for the treatment of stable angina, cognitive impairment is still in preclinical research status.

용도Ginkgolide B is used as a potent PAF-R antagonist. Ginkgolide B speeds up PAF hydrolysis by promoting PAF-AH I α2 homodimer activity. Additionally, this compound has been reported to inhibit neutrophil degranulation in vitro. Inhibits superoxide production in vitro and inhibits bronchoconstriction and is neuroprotective following oral administration in vivo.