Abstract
Chilobolide A, C22H30O5, M.W. = 374,5, orthorhombic, space group P 2,2,21, a = 8.753 (2), b = 8.887 (3), c = 54.247 (14) A, V = 4220(2) A3, Z = 8, Dx = 1.17 g·cm−3, F(000) = 1616 e at room temperature. The structure was solved by direct methods with diffractometer data measured with Cu Kα radiation, and block-full-matrix least-squares refinement converged at R = 0.064 for 1805 observed reflections. Both molecules in an asymmetric unit have similar conformation. The molecular skeleton is bicyclic system, in which an envelope form γ-lactone ring is cis-fused to a cyclotridecadiene ring, the latter ring is in [−+−+−++++−+−−] asymmetric conformation; the methyl groups attached to 4-C and 13-C are situated on E-type double bond, the acetyl group is in equatorial orientation at 10-C and the acetoxy group is in axial at 9-C.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
