Abstract: The disclosure relates to compounds of Formula (I), or pharmaceutically acceptable salts thereof, wherein X1 and X5 is each selected from CR1 or N; X2, X3 and X4 is each selected from CR1, CR2 or N, provided at least one of X2, X3 and X4 is CR2 and provided only one of X1, X2, X3, X4 and X5 can be N. R1, R2, R3, R4, R5, L1, L2 and L3 are as defined herein. Compounds according to Formula (I) are pharmacologically effective as lysyl oxidase (LOX) inhibitors and are believed to be useful in the treatment of, for instance, cancer.

Abstract: The present invention provides mice that have had their PTP-1B genes disrupted by targeted homologous recombination. The mice have no detectable PTP-1B protein, yet appear to be physiologically normal. However, in the fed state on a normal diet, the mice have half the level of circulating insulin as their wild-type littermates. In glucose and insulin tolerance tests, the mice show an increased insulin sensitivity. When fed a high fat, high carbohydrate diet, the mice show a resistance to weight gain as compared to their wild-type littermates. Methods of making the mice and cell lines derived from the mice are also provided. The present invention also provides methods of identifying inhibitors of the enzymatic activity of PTP-1B as well as inhibitors identified by such methods.