(5R,8R)-2-(3,8-Dimethyl-2-oxo-1,2,4,5,6,7,8,8a-octa-hydro-azulen-5-yl)acrylic acid (rupestonic acid).

ABSTRACT: The title compound, C(15)H(20)O(3), crystallizes with two independent mol-ecules in the asymmetric unit. In both mol-ecules, the seven-membered ring adopts a chair conformation. In the crystal structure, inter-molecular O-H⋯O hydrogen bonds link the mol-ecules into chains extending in the [201] direction. The absolute configuration was assigned on the basis of the starting materials.

SUBMITTER: Aisa HA 

PROVIDER: S-EPMC2960231 | biostudies-literature | 2008 Jan

REPOSITORIES: biostudies-literature