title: Two new cleistanthane diterpenes and a new isocoumarine from cultures of the basidiomycete Albatrellus confluens.
abstract: Two new cleistanthane-type diterpenes, 3alpha,5alpha,8beta-trihydroxycleistanth-13(17),15-dien-18-oic acid (1) and 8beta-hydroxy-18-norcleistanth-4(5),13(17),15-trien-3-one (2), a new isocoumarine, 3R-(2R-hydroxypropyl)-8-hydroxyl-7-methyl-3,4-dihydroisocoumarine (3), along with three known aurovertins, aurovertins B (4), C (5) and E (6), four known polyesters, orbuticin (7), BK223A (8), BK223B (9) and 15G256alpha-2-me (10), and a known isocoumarine, 3R-6-hydroxymellein (11), were isolated from cultures of the basidiomycete Albatrellus confluens. The structures of these compounds were established on the basis of spectroscopic and chemical methods.
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, China.
authors.forename: Zhong-Yu
authors.initials: ZY
authors.lastname: Zhou
authors.forename: Rong
authors.initials: R
authors.lastname: Liu
authors.forename: Meng-Yuan
authors.initials: MY
authors.lastname: Jiang
authors.forename: Ling
authors.initials: L
authors.lastname: Zhang
authors.forename: Yun
authors.initials: Y
authors.lastname: Niu
authors.forename: Ying-Cheng
authors.initials: YC
authors.lastname: Zhu
authors.forename: Ze-Jun
authors.initials: ZJ
authors.lastname: Dong
authors.forename: Ji-Kai
authors.initials: JK
authors.lastname: Liu
mesh_terms: D001487:Basidiomycota / Q000737:chemistry*; D003374:Coumarins / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D049934:Isocoumarins; D009682:Magnetic Resonance Spectroscopy
chemical_list: C544994:3R-(2R-hydroxypropyl)-8-hydroxyl-7-methyl-3,4-dihydroisocoumarine; C544992:3alpha,5alpha,8beta-trihydroxycleistanth-13(17),15-dien-18-oic acid; C544993:8beta-hydroxy-18-norcleistanth-4(5),13(17),15-trien-3-one; D003374:Coumarins; D004224:Diterpenes; D049934:Isocoumarins