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Ambergris (0):
Recent article
Ambergris
Abstract
Ambrein and epicoprostanol were evaluated for their antioxidant potential in vitro by chemiluminescence (CL), as well as in vivo using lipid peroxides and glutathione levels as indicators in liver tissue of rats treated with adriamycin (doxorubicin) a well known free radicals producing drug. In the...
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PMID: 17408835
PDF is available here.
PDF is available here.
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Abstract
Ten new derivatives (2-11) of ambrein (1), isolated from ambergris, were prepared by chemical transformation. Oxidation and/or cyclization were effected by reactions with selenium oxide or p-toluenesulfonyl chloride or with the use of shortwave UV light. The structures of 2-12 were elucidated by spe...
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PMID: 17315955
PDF is available here.
PDF is available here.
Abstract
Shape descriptors used in 3D QSAR studies naturally take into account chirality; however, for flexible and structurally diverse molecules such studies require extensive conformational searching and alignment. QSAR modeling studies of two datasets of fragrance compounds with complex stereochemistry u...
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PMID: 15844445
PDF is available here.
PDF is available here.
Abstract
Structure-odour relationship analyses using hierarchical clustering were carried out on a diverse dataset of 47 molecules. These molecules were divided into seven odour categories: ambergris, bitter almond, camphoraceous, rose, jasmine, muguet, and musk. The alignment-independent descriptor EVA (Eig...
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PMID: 15534702
PDF is available here.
PDF is available here.
Abstract
We also included chirality topological descriptors recently developed in our laboratory (Golbraikh, A.; Bonchev, D.; Tropsha, A. J. Chem. Inf. Comput. Sci. 2001, 41, 147-158). CoMMA descriptors were used in combination with MOE descriptors. MolconnZ descriptors were used in combination with chiralit...
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PMID: 15032539
PDF is available here.
PDF is available here.
Abstract
Enzymatic acetylation of (+/-)-gamma-cyclohomogeraniol[2-(2',2'-dimethyl-6'-methylenecyc lohexyl)ethanol] with vinyl acetate in the presence of lipase AK yielded the acetate of its (R)-isomer, leaving its (S)-isomer intact. The (S)-isomer was chemically converted to (S)-gamma-coronal[2-methylene-4-(...
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PMID: 10400325
PDF is available here.
PDF is available here.
Chemical Senses (24)2 1999
Abstract
An electronic-topological approach has been used to define an active ambergris fragment (AAF) which correctly describes the presence (or absence) of the ambergris odour of all 181 compounds investigated. The AAF consists of one oxygen atom and three carbon atoms (alpha, beta, gamma) which are separa...
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PMID: 10321818
PDF is available here.
PDF is available here.