synthesis of prostaglandin and phytoprostanes B1 is described. The key step is an intermolecular Pauson−Khand reaction between a silyl-protected propargyl acetylene and ethylene. This reaction, promoted by NMO in the presence of 4 Å molecular sieves, afforded the 3-tert-butyldimethylsilyloxymethyl-2-substituted-cyclopent-2-en-1-ones (III) in good yield and with complete regioselectivity. Deprotection
Phosphonate-Mediated Synthesis of Biologically Active Cyclopentanones and Cyclopentenones
作者:Marian Mikołajczyk
DOI:10.1080/10426500212213
日期:2002.6.1
3-(phosphorylmethyl)cyclopent-2-enones as well as a complete desymmetrization of meso -tartaric acid are discussed as a platform for developing the synthesis of racemic rosaprostol and enantiomeric forms of prostaglandin B 1 methyl ester, isoterrein, and neplanocin A.
3-(磷酰甲基)环戊-2-烯酮的合成和反应性以及内消旋酒石酸的完全去对称化作为开发外消旋罗沙前列醇和前列腺素 B 1 甲酯的对映体形式的合成的平台进行了讨论,isoterrein,和奈普诺星 A。