Author/Authors :
Bertus، نويسنده , , Philippe and Zhang، نويسنده , , Jing-Heng and Sir، نويسنده , , Geoffroy and Weibel، نويسنده , , Jean-Marc and Pale، نويسنده , , Patrick، نويسنده ,
Abstract :
Optically pure protected mono- or dihydroxylated cyclopentanones, precursors for the core of the antitumor antibiotics NCS and N1999A2, 1 and 2, were obtained in six to eight steps with excellent overall yields (up to 52%).