Drug-induced modifications of the immune response. 12. 4,5-Dihydro-4-oxo-2-(substituted amino)-3-furancarboxylic acids and derivatives as novel antiallergic agents
作者:Robert A. Mack、Walter I. Zazulak、Lesley A. Radov、Jane E. Baer、Jeffrey D. Stewart、Philip H. Elzer、C. Richard Kinsolving、Vassil S. Georgiev
DOI:10.1021/jm00118a008
日期:1988.10
The synthesis of a series of novel 4,5-dihydro-4-oxo-2-(substituted amino)-3-furancarboxylic acids, salts, esters, and amides is described. The title compounds when tested in the mediator-induced dermal vascular permeability and active anaphylaxis assays in rats demonstrated moderate to potent antiallergic activity. The [2-trans-(4-methylphenyl)cyclopropyl]amino analogue 53 emerged as the most active
Silver halide emulsion containing yellow color couplers
申请人:Fuji Photo Film Co., Ltd.
公开号:US04106942A1
公开(公告)日:1978-08-15
A yellow color forming photographic coupler represented by the following general formula (I) ##STR1## in which X represents an aliphatic group, an aromatic group or a heterocyclic group; Y represents a hydrogen atom or a coupling off group; R.sub.1 and R.sub.2 each represents an aliphatic group, or R.sub.1 and R.sub.2 can combine to form a ring; and R.sub.3 and R.sub.4 each represents a hydrogen atom, an aliphatic group, an aromatic group or a heterocyclic group.