18.Tripeptide aldehyde. Reversible competitive inhibitor of serine and cysteine proteases. Inhibits also phospholipase D and C activation in rat hepatocytes.
19.The synthesis of epalrestat,an aldose reductase inhibitor, was improved. The yield of its intermediate 3-carboxymethyl rhodanine was raised to 76.4%.
20.A new paint remover was synthesized with chloroalkane as primary solvent,organic acid as accelerator and organic compound containing N and S as inhibitor.