Chemically it is (5aR-(3aS*,5aα,8b,8aS*,9a,10aα))-9-(1,1-dimethylethyl)-10,10a-dihydro-8,9-dihydroxy-4H,5aH,9H-furo[2,3-b]furo[3',2':2,3]cyclopenta [1,2-c]furan-2,4,7(3H,8H)-trione.
Bilobalide is a main constituent of the terpenoids found in Ginkgo leaves. It also exists in minor amounts in the roots. It is a sesquiterpenoid, i.e. it has a 15-carbon skeleton. Its exact synthesis pathway from farnesyl pyrophosphate is still unknown.
WIPO ASSIGNS PATENT TO VELLEJA RESEARCH FOR "GINKGO BILOBA EXTRACT WITH A STANDARDISED GINKGO FLAVONE GLYCOSIDES CONTENT DEPRIVED OF THE PAF-ANTAGONIST TERPENIC FRACTION, AND COMPOSITIONS CONTAINING IT, FOR THE PREVENTION AND TREATMENT OF CIRCULATORY, COGNITIVE, GERIATRIC AND SENSORY DISORDERS" (ITALIAN INVENTOR)
Feb 08, 2011; GENEVA, Feb. 8 -- Publication No. WO/2011/012141 was published on Feb. 03. Title of the invention: "GINKGO BILOBA EXTRACT WITH A...