Octahydro-7a,8 '-dimethylspiro[isobenzofuran-4(1H),4 '(3 ' H)-[1H-7,9a]methanocyclohepta[c]pyran]1 ',3,9 '(3aH,4 ' aH)-trione

Authors
Shi, H Pan, YJ Zhang, XQ Yu, KB
Citation
H. Shi et al., Octahydro-7a,8 '-dimethylspiro[isobenzofuran-4(1H),4 '(3 ' H)-[1H-7,9a]methanocyclohepta[c]pyran]1 ',3,9 '(3aH,4 ' aH)-trione, ACT CRYST E, 57, 2001, pp. O1007-O1009
Citations number
9
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE
ISSN journal
16005368 → ACNP
Volume
57
Year of publication
2001
Part
11
Pages
O1007 - O1009
Database
ISI
SICI code
1600-5368(200111)57:<O1007:O'''H>2.0.ZU;2-9
Abstract
The title compound, C20H26O5, or ludongnin B, which has been isolated from Rabdosia var lophanthoides, is composed of three six-membered rings and two five-membered rings. The isobenzofuran ring system couples almost orthogon ally to the methanocyclohepta[c]pyran moiety through a spiro-C atom.