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US 4,400,518 AGranted
Composition of matter and process
AssigneeThe Upjohn Company
InventorWendell Wierenga
Life of this patent
Estimating the term…
Abstract
Novel antibacterially-active compound, 1,2,8,8a-cyclopropa[c]-benzo[1,2-b:-4,3-b']dipyrol-4(5H)one, prepared by a novel chemical process. This compound, as well as antibacterially-active intermediates, can be used to eradicate or control susceptible bacteria, for example, B. subtilis, K. pneumonia, S. lutea, S. aureus, and M. avium.
Claims6
A compound of the formula
- wherein R.sub.2 and R.sub.3 are H, alkyl of from 1 to 5 carbon atoms, inclusive, and phenyl;
- R.sub.4 is selected from the group consisting of SO.sub.2 R.sub.2, SO.sub.2 CH.sub.2 CO phenyl, CO.sub.2 CH.sub.2 Z where Z is selected from the group consisting of CH.sub.2 I, CCl.sub.3, CH.sub.2 SO.sub.2 R.sub.2, Ph (phenyl), and fluoroenylmethyl, and X is selected from the group consisting of OSO.sub.2 R.sub.2, Cl, Br, and I, with the proviso that R.sub.2 can not be H when it is adjacent to SO.sub.2.
Dependencies are inferred from the claim text.