title: An attempt to enlarge the B ring of maoecrystal B, an ent-kaurane-type diterpene.
abstract: An attempt to enlarge the B ring of maoecrystal B (6), an ent-kaurane-type diterpene from Isodon eriocalyx (Labiatae), to obtain the desired compound 23 via six steps, led to the novel rearranged diterpene compound 22.
authors.affiliation: Department of Chemistry of Medicinal Natural Products, West China College of Pharmacy, Sichuan University, No. 17, Duan 3, Renmin Nan Road, Chengdu 610041, China.
authors.forename: L
authors.initials: L
authors.lastname: Xu
authors.forename: F-P
authors.initials: FP
authors.lastname: Wang
mesh_terms: D004224:Diterpenes / Q000737:chemistry*; D045786:Diterpenes, Kaurane / Q000737:chemistry*; D007202:Indicators and Reagents; D037602:Isodon / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D016339:Spectrometry, Mass, Fast Atom Bombardment
chemical_list: D004224:Diterpenes; D045786:Diterpenes, Kaurane; D007202:Indicators and Reagents; C514722:maoecrystal B