V. Dibussolo et al., CONVENIENT DIASTEREOSPECIFIC SYNTHESIS OF A ROCIVERINE PRECURSOR AND ITS RESOLUTION BY LIPASE-CATALYZED TRANSESTERIFICATION, Tetrahedron : asymmetry, 7(12), 1996, pp. 3585-3592
-)-1-Cyclohexyl-c-2-hydroxymethyl-r-1-cyclohexanol 3, a precursor of t
he antimuscarinic drug Rociverine 1, was obtained diastereospecificall
y in very high yield, from the Grignard reaction between C6H11MgCl and
an appropriately protected 2-(hydroxymethyl)cyclohexanone. The prepar
ation of enantiomerically enriched cis diol(+)-(1R,2S)-3 and the corre
sponding 2-acetoxymethyl derivative (+)-(1S,2R)-12 was achieved by lip
ase PPL-catalyzed transesterification of racemic diol (+/-)-3. Copyrig
ht (C) 1996 Elsevier Science Ltd.