| Samaderin B and C from Samadera indica. | |
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MedLine Citation:
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PMID: 12909764 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Samaderin B, or (1R,2S,5R,5aR,7aS,11S,11aS,11bR,14S)-1,7,7a,11,11a,11b-hexahydro-1,11-dihydroxy-8,11a,14-trimethyl-2H-5a,2,5-(methanoxymetheno)naphth[1,2-d]oxepine-4,6,10(5H)-trione, C(19)H(22)O(7), and samaderin C, or (1R,2S,5R,5aR,7aS,10S,11S,11aS,11bR,14S)-7,7a,10,11,11a,11b-hexahydro-1,10,11-trihydroxy-8,11a,14-trimethyl-2H-5a,2,5-(methanoxymetheno)naphth[1,2-d]oxepine-4,6(1H,5H)-dione, C(19)H(24)O(7), were isolated from the seed kernels of Samadera indica and were shown to exhibit antifeedant activity against Spodoptera litura third-instar larvae. The replacement of the carbonyl group in samaderin B by a hydroxy group in samaderin C causes conformational changes at the substitution site, but the overall conformation is not affected; however, the compounds pack differently in the crystal lattice. |
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Authors:
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R Malathi; S S Rajan; G Suresh; G N Krishnakumari; G Gopalakrishnan |
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Publication Detail:
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Type: Journal Article Date: 2003-07-12 |
Journal Detail:
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Title: Acta crystallographica. Section C, Crystal structure communications Volume: 59 ISSN: 0108-2701 ISO Abbreviation: Acta Crystallogr C Publication Date: 2003 Aug |
Date Detail:
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Created Date: 2003-08-11 Completed Date: 2004-05-14 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8305826 Medline TA: Acta Crystallogr C Country: Denmark |
Other Details:
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Languages: eng Pagination: o416-8 Citation Subset: IM |
Affiliation:
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Department of Crystallography and Biophysics, University of Madras, Guindy Campus, Chennai 600 025, India. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Crystallography, X-Ray Models, Molecular Molecular Structure Quassins / chemistry, isolation & purification* Simaroubaceae / chemistry* |
| Chemical | |
Reg. No./Substance:
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0/Quassins; 0/samaderin B; 0/samaderin C |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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