title: Pinnatane A from the bark of Walsura pinnata Hassk.
abstract: In the mol-ecule of pinnatane A, C(30)H(48)O(3), isolated from the bark of Walsura pinnata Hassk, the four cyclo-hexane rings adopt chair conformations; the carboxyl and hydr-oxy substituents occupy axial positions. The cyclo-hexene ring is envelope-shaped. Adjacent mol-ecules are linked by O-H⋯O hydrogen bonds into a chain running along the c axis.
authors.affiliation: Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia.
authors.forename: Khalit
authors.initials: K
authors.lastname: Mohamad
authors.forename: Mahfizah
authors.initials: M
authors.lastname: Yusoff
authors.forename: Khalijah
authors.initials: K
authors.lastname: Awang
authors.forename: Kartini
authors.initials: K
authors.lastname: Ahmad
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng