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Structure of asperketal B.

作者信息

Ji X, van der Helm D, Shin J, Fenical W

机构信息

Department of Chemistry and Biochemistry, University of Oklahoma, Norman 73019.

出版信息

Acta Crystallogr C. 1992 May 15;48 ( Pt 5):891-4. doi: 10.1107/s0108270191011241.

DOI:10.1107/s0108270191011241
PMID:1388937
Abstract

3,7,11-Trimethyl-13-oxabicyclo[8.3.0]trideca-2,6-diene-12-spiro-2' -(5',5'-dimethyltetrahydrofuran), asperketal B, C20H30O2, M(r) = 302.46, orthorhombic, P2(1)2(1)2(1), a = 10.064(1), b = 22.214(2), c = 8.330 (1) A, V = 1862.3 A3, Z = 4, Dx = 1.08 g cm-3, Cu K alpha, lambda = 1.54178 A, mu = 4.55 cm-1, F(000) = 664, T = 294 (1) K, R = 0.031, wR = 0.027 for 953 data. The backbone of the molecule is composed of a cyclodecadiene ring which is cis fused to a bicyclic ketal system. The relative configurations at C(1), C(10), C(11) and C(12) are 1S*, 10R*, 11R* and 12R*.

摘要

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