Abstract: This invention provides a novel ganglioside ceramidase which has a substrate specificity at least for GD1a, GM1, GM2 and GM3 and acts at least on GD1a, GM1, GM2 and GM3 and catalyzes the reaction of hydrolysis of ganglioside to lysoganglioside and fatty acid.This invention further provides a process for producing the novel ganglioside ceramidase which comprises cultivating ganglioside ceramidase producing strain belonging to the genus Nocardia in a culture medium and collecting ganglioside ceramidase from the culture.

Abstract: Platinum compounds useful in the treatment of cancer are disclosed. Compositions containing these compounds and methods of using the same are also discussed. The compound have the formula: ##STR1## wherein n is 0 or 1, R.sub.1 is selected from the group consisting of hydrogen, a mono or disaccharide or a derivative thereof linked to the nitrogen atom by a --NHCO-amide moiety, an --NHCS-- thioamide moeity or a --CO-- carbonylmoiety, R' is selected from the group consisting of hydrogen and C.sub.1-4 alkyl, and R.sub.2 and R.sub.3 are selected from the group consisting of hydrogen, C.sub.1-4 alkyl or R.sub.2 and R.sub.3 or R.sub.2 and R.sub.3 together are linked to adjacent carbon atoms on a four, five or six membered ring structure, or R.sub.2 and R.sub.3 together form a fused or bicyclic ring with adjacent carbon atoms; with the proviso that R' and R.sub.1 cannot both be hydrogen when n=o,or a pharmaceutically acceptable salt thereof.