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The synthesis and biological evaluation of a series of heterocyclic analogues of the previously reported LTA(4) hydrolase inhibitor 1b are described. Imidazopyridine and purine analogues are specifically highlighted with several demonstrating excellent potency in our in vitro assays, as well as good oral activity in a mouse ex vivo assay.
The synthesis and biological evaluation of a series of functionalized pyrrolidine- and piperidine-containing analogues of our lead LTA(4) hydrolase inhibitor, SC-57461A, is described. A number of compounds showed excellent potency in our in vitro screens and several demonstrated good oral activity in a mouse ex vivo assay. These efforts led to the… (More)
Leukotriene B(4) (LTB(4)) is a pro-inflammatory mediator that has been implicated in the pathogenesis of a number of diseases including inflammatory bowel disease (IBD) and psoriasis. Since the action of LTA(4) hydrolase is the rate-limiting step for LTB(4) production, this enzyme represents an attractive pharmacological target for the suppression of LTB(4)… (More)
We describe a series of 1,2,4-oxadiazoles, which are potent antagonists of the integrin alpha(v)beta3 and, in addition, show selectivity relative to the other beta3 integrin alpha(IIb)beta3. In whole cells, the majority of these analogs also demonstrated modest selectivity against other alpha(v) integrins such as alpha(v)beta1 and alpha(v)beta6.
A series of spirolactones containing a cyclopropane ring in the molecule was examined for its effects on the mineralocorticoid receptor. The results were compared with those of a similar series of spirolactones in which the cyclopropane ring was replaced by a double bond. Insertion of a double bond or an alpha-cyclopropane ring into the 1,2 or the 6,7… (More)
A series of 22-hydroxycholesterol derivatives with a modified side chain terminus was prepared. These agents were evaluated in vitro and in vivo for their ability to suppress HMG CoA reductase, the rate-limiting enzyme of cholesterol biosynthesis. In tissue culture assays, 22-hydroxycholesterol as well as the side chain modified analogues were potent… (More)
15-Ketoprogesterone is as active as spironolactone in blocking the mineralocorticoid effect of deoxycorticosterone acetate. This activity is reduced when a methylene group is attached to the 6beta, 7beta position. The title compound was prepared from 15alpha-acetoxy-6-dehydroprogesterone. Methylenation of the delta6 double bond with dimethyloxosulfonium… (More)
A series of oxopyridobenzothiazines (azaphenothiazines) were prepared and evaluated for binding to the benzodiazepine receptor, anticonvulsant activity in the pentylenetetrazole-induced convulsion assay, and, in two cases, ability to increase punished responding in a standard conflict test. While parent compound 1a showed binding affinity comparable to… (More)
We describe a series of conformationally-restricted cinnamic acid peptidomimetics as well as several cinnamic acid isosteres, including 3-phenylpropionic acids, 2-amino-3-phenylpropionic acids, phenoxyacetic acids and 2-phenylcyclopropylcarboxylic acids. Several analogues demonstrated low to sub-nanomolar potencies against alpha(v)beta(3) and greater than… (More)