Dimethyl cis-2-cyclobutene-1,2-carboxylate 1 was kinetically resolved by porcine liver esterase to give methyl hydrogen (1R,2S)- (+)-cis- 3-cyclobutene-1,2-dicarboxylate 3. ((1R,4S)-4-Ethanoyloxymethyl-2-cyclobutenyl)methyl ethanoate 2 was kinetically resolved using the lipase from Pseudomonas fluorescens (Amano P) to give ((1R,4S)-4-hydroxymethyl-2-cyclobutenyl)methyl ethanoate 8.
Efficient total synthesis of racemic and optically active cyclobut-A and simple analogues
作者:Michael E. Jung、Adam W. Sledeski
DOI:10.1039/c39930000589
日期:——
Rapid synthesis of the potent antiviral agent, cyclobut-A, 1a, from the inexpensive starting materials maleic anhydride and acetylene, in both racemic and optically active forms, is described; the route also allows for the preparation of several hydroxylated and keto analogues in good overall yield.
Resolvin E2 is a potent anti-inflammatory compound, derived from eicosapentaenoic acid. The efficient total synthesis of resolvin E2 by taking advantage of its intrinsic pseudoenantiomeric substructures is reported. The synthetic resolvin E2 proved to be biologically active in blocking neutrophil Infiltration and reducing proinflammatory cytokines in the acute peritonitis model.
LUKAS, KARL-LUDWIG
作者:LUKAS, KARL-LUDWIG
DOI:——
日期:——
Enzymatic hydrolysis of meso-cyclobutene esters.
作者:Ian Harvey、David H.G. Crout
DOI:10.1016/s0957-4166(00)80118-4
日期:1993.5
Dimethyl cis-2-cyclobutene-1,2-carboxylate 1 was kinetically resolved by porcine liver esterase to give methyl hydrogen (1R,2S)- (+)-cis- 3-cyclobutene-1,2-dicarboxylate 3. ((1R,4S)-4-Ethanoyloxymethyl-2-cyclobutenyl)methyl ethanoate 2 was kinetically resolved using the lipase from Pseudomonas fluorescens (Amano P) to give ((1R,4S)-4-hydroxymethyl-2-cyclobutenyl)methyl ethanoate 8.