Syntheses of (S)-2,5-dihydro-3-hydroxy-5-oxofuran-2-acetic acid (5) and its methyl ester are described. Biomimetic acylations of the ester and of (R)-3-hydroxy-2-methylfuran-2(5H)-one[(R)-γ-methyltetronic acid](1) to produce (S)-carlosic acid (3) and (R)-carolic acid ...
Procedure for obtaining Derivatives of acids (1 - phenyl - 2 - oxo (0 2-thienyl) - 2 - 5 - indaniloxi) - acetic acid1474460 Indanones MERCK & CO Inc 7 Oct 1974 [11 Oct 1973 30 July 1974] 26849/76 Divided out of 1474459 Heading C2C The invention comprises compounds of formula ...