MANUFACTURE OF ALL-EXPORTING SUBSTANCES AND EXPORT PRODUCTS

摘要

PCT No. PCT/GB96/02531 Sec. 371 Date May 14, 1998 Sec. 102(e) Date May 14, 1998 PCT Filed Nov. 18, 1996 PCT Pub. No. WO97/18183 PCT Pub. Date May 22, 1997A process for the preparation of a compound of formula (I) wherein R2 is a (C1-C6)alkyl, (C2-C6)alkenyl, (C2-C6)alkynyl, phenyl(C1-C6)alkyl, heteroaryl(C1-C6)alkyl, cycloalkyl(C1-C6)alkyl or cycloalkenyl(C1-C6)alkyl group, any one of which may be optionally substituted by one or more substituents selected from (C1-C6)alkyl, (C1-C6)alkyl, -S(C1-C6)alkyl, halo and cyano (-CN); and R7 is a carboxylic acid protecting group, which process comprises the internal molecular rearrangement of an allyl carboxylate compound of formula (II) wherein R2 and R7 are as defined in relation to formula (I) to form the desired compound of formula (I). Compounds (I) are intermediates for the preparation of Matrix metaloproteinase inhibitors.