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Carbon-13 NMR Spectra of Sesquiterpene Lactones
Publisher Summary This chapter presents the carbon-13 nuclear magnetic resonance (NMR) data of sesquiterpene lactones. The structure classification and methods of structure determination are alsoExpand
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A straightforward route to helically chiral N-heteroaromatic compounds: practical synthesis of racemic 1,14-diaza[5]helicene and optically pure 1- and 2-aza[6]helicenes.
Helicenes have attracted attention as unique inherently chiral three-dimensional aromatic compounds for several decades. Despite significant recent progress in the synthesis and applications ofExpand
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Synthesis and solvent driven self-aggregation studies of meso-"C-glycoside"-porphyrin derivatives.
New types of porphyrin derivatives bearing "C-glycoside" moieties, either in 5,10,15,20- or in 5,15-meso-positions, were prepared and fully characterized. The presence of the glycosidic groupsExpand
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Picolyl amides of betulinic acid as antitumor agents causing tumor cell apoptosis.
A series of picolyl amides of betulinic acid (3a-3c and 6a-6c) was prepared and subjected to the cytotoxicity screening tests. Structure-activity relationships studies resulted in finding differencesExpand
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Seasonal variations in the content of taxanes in the bark of Taxus baccata L.
Analytical determination by HPLC of five taxanes—paclitaxel, cephalomannine, 10-deacetylpaclitaxel, 10-deacetylcephalomannine and taxcultine—in extracts from the bark of Taxus baccata indicates thatExpand
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Enantioselective properties of induced lipases from Geotrichum
Production of lipase by three strains of Geotrichum candidum (DBM 4012, DBM 4013, DBM 4166) and one strain of Geotrichum ludwigii (DBM 48) in liquid medium was investigated under addition of oliveExpand
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A convenient synthesis of trans-sabinene hydrate from (-)-3-thujol via a highly selective ene reaction of singlet oxygen.
trans-Sabinene hydrate (1), was synthesized from (−)-3-thujol (2) in four steps. The key step was the selective formation of trans-2-hydroxy-3-thujene (6) by photooxygenation of a 3:1 mixture of 2-Expand
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A new access to β-methyl substituted secondary alcohols. Application to the synthesis of 4-methylheptan-3-ol
Abstract All four stereoisomers of 4-methylheptan-3-ol were synthesized by a five-step route starting from 4-thianones. Key steps in the synthesis include: (a) reduction of 3-propyl-4-thianone toExpand
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