Biosynthesis of fungal metabolites. Terrein, a metabolite of Aspergillus terreus Thom
作者:Robert A. Hill、Rachel H. Carter、James Staunton
DOI:10.1039/p19810002570
日期:——
Terrein, a metabolite of AspergillusterreusThom, is biosynthesised from 3,4-dihydro-6,8-dihydroxy-3-methylisocoumarin by contraction of an aryl ring. The direction of the ring contraction has been investigated using [1,2-13C2]acetate as precursor.
Disubstituted lavendustin A analogs and pharmaceutical compositions comprising the analogs
申请人:THE UNITED STATES GOVERNMENT as represented by THE DEPARTMENT OF HEALTH AND HUMAN SERVICES
公开号:EP1367046A9
公开(公告)日:2004-05-12
Disubstituted lavendustin A analogs that are PTK inhibitors having antiproliferative activity are described. Preferred compounds of the present invention, without limitation, satisfy either Formula 1 or Formula 2. Currently preferred compounds ,based on in vivo biological activity, are 4'-adamantylbenzoate-1'-N-1,4-dihydroxybenzylamine and 4'-adamantylmethylbenzoate-1'-N-1,4-dihydroxybenzylamine. The present invention also provides pharmaceutical compositions comprising effective amounts of disubstituted lavendustin A analogs. Such compositions also may comprise other active ingredients, other materials conventionally used in the formulation of pharmaceutical composition, and mixtures thereof. The compounds and compositions of the present invention can be used for treating subjects to, for example, inhibit the proliferation of living cells in the treatment of proliferative diseases.
Named compounds are useful in making dry analytical elements for assaying lithium in serum, The compounds have the general structure:
这些化合物具有一般结构:
Dry analytical element for lithium assay
申请人:Johnson & Johnson Clinical Diagnostics, Inc.
公开号:EP0516227A2
公开(公告)日:1992-12-02
A novel 14-crown 4-ether derivative is disclosed for use in a dry analytical element for assaying lithium.
本研究公开了一种新型 14-冠 4-醚衍生物,可用于测定锂的干式分析元件。
Non-amine based analogs of lavendustin A as protein-tyrosine kinase inhibitors
作者:Mark S. Smyth、Irena Stefanova、Frank Hartmann、Ivan D. Horak、Nir Osherov、Alexander Levitzki、Terrence R. Burke
DOI:10.1021/jm00072a022
日期:1993.10
The fermentation product lavendustin A (1) is a protein-tyrosine kinase (PTK) inhibitor whose active pharmacophore has previously been shown to reside in the more simplified salicyl-containing benzylamine 2. Amine 2 bears some structural resemblance to two other natural product PTK inhibitors, erbstatin (3) and piceatannol (4). Non-amine containing analogues of 2 were therefore synthesized which incorporated additional aspects of either erbstatin or piceatannol. Examination of these inhibitors in immunoprecipitated p56lck, epidermal growth factor receptor (EGFR), and c-erb B-2/HER 2/neu PTK preparations showed that compound 12 (IC50 = 60 nM) was one of the most potent p56lck inhibitors reported to date. These results demonstrate that nitrogen is not an essential component of the lavendustin A pharmacophore 2 and that 1,2-diarylethanes and -ethenes bearing a salicyl moiety appear to be valuable structural motifs for the construction of extremely potent PTK inhibitors.