(5R,6S,8S,9R,14R,15R,17R,18S,21S,24R,26S,27R)-5α-Chloro-16,24-cyclo-13,14-secoergost-2-ene-18,26-dioic acid-14:17,14:27-diep­oxy-6β,13,20,22-tetra­hydr­oxy-1,15-dioxo-γ-lactone δ-lactone methanol solvate monohydrate

✍ Scribed by Choudhary, M. Iqbal ;Yousuf, Sammer ;Atta-ur-Rahman, ;Anjum, Shazia ;Fun, Hoong-Kun ;Ali, Shamsher

• Publisher: International Union of Crystallography
• Year: 2005
• Tongue: English
• Weight: 308 KB
• Volume: 61
• Category: Article
• ISSN: 1600-5368
• DOI: 10.1107/s1600536805030011

✦ Synopsis

The title compound, C 28 H 27 O 10 ClÁCH 3 OHÁH 2 O, was isolated from Physalis minima. The rigid molecule consists of eight fused rings involving three lactones. The spiro-fused -lactone rings are in half-chair and envelope conformations. The spirofused -lactone rings are fused to a cyclohexene ring, which is in a half-chair conformation. The outermost cyclohexene ring and -lactone rings adopt half-chair and envelope conformations, respectively. Intra-and intermolecular O-HÁ Á ÁO, C-HÁ Á ÁCl and C-HÁ Á ÁO hydrogen bonds are observed.