Natural diterpenoid ludongnin, octahydro-5 '-hydroxy-7a-methyl-8 '-methylenespiro[isobenzofuran-4(1H),4 '(3 ' H)-[1H-7,9a]methanocyclohepta[c]pyran]1',3,9 '(3aH,4 ' aH)-trione

Authors
Shi, H Pan, YJ Jin, ZM
Citation
H. Shi et al., Natural diterpenoid ludongnin, octahydro-5 '-hydroxy-7a-methyl-8 '-methylenespiro[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. O685-O687
Citations number
8
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
8
Pages
O685 - O687
Database
ISI
SICI code
1600-5368(200108)57:<O685:NDLO''>2.0.ZU;2-K
Abstract
The asymmetric unit of ludongnin consists of two molecules of C20H24O6. The hydroxyl group of each molecule participates in a hydrogen bond with the c arbonyl oxygen of the delta -lactone moiety of a translationally related mo lecule, thus giving rise to the two symmetry-independent sets of infinite c hains in the crystal, one of which is stretched along the c and another alo ng the a axis of the crystal.