title: 20-O-β-d-Xylopyranos-yl(1→6)-β-d-glucopyranosyl-20(S)-protopanaxadiol methanol solvate.
abstract: The title compound, C(41)H(70)O(12)·CH(4)O, was prepared by microbial transformation. Within the steroid skeleton of the mol-ecule, three six-membered rings exhibit a chair conformation, while the five -membered ring adopts an envelope conformation. The two pyranosyl rings also adopt chair conformations. The mol-ecules are held together by an extensive O-H⋯O hydrogen-bonding network.
authors.affiliation: Department of Biosynthetic Drugs, School of Pharmacy, Fudan University, 138 YiXueYuan Road, Shanghai 200032, People's Republic of China.
authors.forename: Xing-Wei
authors.initials: XW
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Zhou
authors.forename: Qin
authors.initials: Q
authors.lastname: Yan
authors.forename: Pei
authors.initials: P
authors.lastname: Zhou