CONJUGATES ADAPTED FOR SITE-SPECIFIC DELIVERY OF AN ACTIVE AGENT CONTAINING A SOLUBLE MACROMOLECULAR PROTEINACEOUS PHARMACEUTICAL CARRIER COVALENTLY BONDED TO THE ACTIVE AGENT

摘要

PCT No. PCT/NL93/00061 Sec. 371 Date Nov. 4, 1994 Sec. 102(e) Date Nov. 4, 1994 PCT Filed Mar. 15, 1993 PCT Pub. No. WO93/17713 PCT Pub. Date Sep. 16, 1993Use of alpha -hydroxy acids and poly- alpha -hydroxy acids as spacer between a therapeutically and/or diagnostically active compound and a soluble macromolecular carrier in pharmaceutical compositions having site-specific delivery. In one embodiment glycolic acid, L-lactic acid or tetra-L-lactic acid is used as spacer between a non-steroidal anti-inflammatory substance and a carrier of low molecular protein (LMWP).