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HORSE LIVER ALCOHOL DEHYDROGENASE (HLADH) MEDIATED CHEMICOENZYMATIC ASYMMETRIC SYNTHESIS OF (+)-TWISTANE FROM cis-DECALIN-2,7-DIONE
HLADH mediated reduction differentiated between the enantiotopic carbonyl groups in cis-decalin-2,7-dione (1) provide (−)-(7S,9S,10R)-7-hydroxy-cis-decalin-2-one (3) which was converted, via (+)-4,Expand
Synthesis and molecular structure of [7]circulene
Preparation du compose du titre (de structure semblable au coronene mais a 7 cycles benzeniques) a partir de la condensation du bis-bromomethyl-2,7 naphtalene et du bis-mercaptomethyl-3,3'Expand
Synthesis and chiral recognition of optically active crown ethers incorporating a helicene moiety as the chiral centre
The synthesis of optically active crown ethers (8), (14), and (18) incorporating helicene molecular frameworks is reported. Their chiral recognition properties have been examined and show thatExpand
Structure of torilin
Abstract The structure of torilin (1), C22H32O5, isolated from the seeds of Torilis japonica DC, has been established as a sesquiterpene ester of the guaiane series.
The mechanism of introduction of alkyl groups at carbon 24 of sterols. 3. The second one-carbon transfer and reduction.
TLDR
The results demonstrate that a second transfer of a C1 group to the Δ24(28) bond occurs with the formation of a 24-ethylidene group in the biosynthesis of 24-substituted C2 steroids. Expand
The metabolic role of the 24-ethylidenecholesterols.
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