A compound of formula (I) or a pharmaceutically acceptable salt or prodrug ester thereof, wherein the groups R2, R3, R4, Q, X and Y are as defined in the specification, is useful in the treatment of bone conditions related to increased calcium depletion or resorption.
Compounds having the formula:
wherein n is 0, 1 or 2;
X is OH or OCOR2m wherein R2 is hydrogen or (C,-C.) alkyl;
R is hydrogen, a radical group forming an ester hydrolyzable under physiological conditions, or an acyloxymethyl or 1-(acyloxy)ethyl radical derived from a convential beta-lactam antibiotic; and
R' is selected from a wide range of alkyl, cycloalkyl, aryl, aralkyl, heterocyclyl or heterocyclylalkyl groups
and their pharmaceutically acceptable salts.
These compounds are useful as antibacterials and/or beta-lactamase inhibitors.
from readily accessible substrates. This reaction involves the in situ sp3 C–H oxidation of arylmethylketones to phenylglyoxal, followed by imine formation and intramolecular nucleophilic addition, resulting in the formation of two new C–N bonds. Furthermore, the method is applicable to a wide range of arylmethylketones, including heterocycles and drug-derived substrates, yielding the desired products
开发了一种 I 2促进的无金属方案,用于从易于获得的底物中一锅合成 6-芳酰基-5,6-二氢-8 H-喹唑啉代[4,3- b ]喹唑啉-8-酮。该反应涉及芳基甲基酮原位sp 3 C-H 氧化成苯基乙二醛,随后形成亚胺和分子内亲核加成,从而形成两个新的 C-N 键。此外,该方法适用于广泛的芳基甲基酮,包括杂环化合物和药物衍生底物,可产生所需的产物,收率范围为62%至93%。此外,这种方法的实用性通过克级合成得到了证明。
BENZOQUINAZOLINE DERIVATIVES AND THEIR USE IN TREATING BONE DISORDERS