Beta-lactamase inhibiting 2-beta-substituted-2-alphamethyl-(5R)penam-3-alpha-carboxylic acid 1,1-dioxides and esters thereof, wherein the 2-beta-substituent is cyano, acetyl, alkoxycarbonyl, omegahydroxyalkoxycarbonyl, car- balkoxymethoxycarbonyl or dialkylaminocarbonyl; intermediates therefor wherein the 2-beta-substituent is carboxy, chlorocarbonyl or aminocarbonyl; methods for their preparation and use as beta-lactamase inhibitors.
抑制β-内酰胺酶的2-beta-取代基-2-
樟脑甲基-(5R)戊-3-α-
羧酸1,1-二氧化物及其
酯类,其中2-beta-取代基为
氰基、乙酰基、烷氧基羰基、ω-羟基烷氧基羰基、car- balkoxymoxycarbonyl或二烷基
氨基羰基;其中2-beta-取代基为羧基、
氯羰基或
氨基羰基的中间体;其制备方法和作为β-内酰胺酶抑制剂的用途。