This invention relates to compounds of the formulae:
wherein
A1 is O, S, N—R1 or CHR1;
A4 is N—R4 or CHR4;
R2 is a sidechain containing an acid or ester group;
R1, R4 and R5 are substituents such as H, alkyl and aryl alkyl, and
R6 is a sidechain containing a nitrogen group; and
pharmaceutically acceptable salts thereof,
which are effective for inhibiting platelet aggregation, pharmaceutical compositions for effecting such activity, and a method for inhibiting platelet aggregation.
Novel 2-aminotetralin derivatives were synthesized as antifungal agents. The 2-aminotetralin scaffold was chemically designed to mimic the tetrahydroisoquinoli ne ring of the lead molecule described before. Their antifungal activities were evaluated in vitro by measuring the minimal inhibitory concentrations (MICs). Compounds 10a, 12a, 12c, 13b, and 13d are more potent than fluconazole against seven testing human fungal pathogens. Compound 10b exhibits much higher antifungal activities against all of the four fluconazole-resistant clinic Candida albicans strains than the control drugs including amphotericin B, terbinafine, ketoconazole, and itraconazole. The mode of action of some compounds to the potential receptor lanosterol 14 alpha-demethylase (CYP51) was investigated by molecular docking. The studies presented here provide a new structural type for the development of novel antifungal compounds. Furthermore, 10b was evaluated in vivo by a rat vaginal candidiasis model, and it was found that 10b significantly decreases the number of fungal colony counts.
Conformationally defined adrenergic agents. 15. Conformationally restricted and conformationally defined tyramine analogs as inhibitors of phenylethanolamine N-methyltransferase
作者:Qizhuang Ye、Gary L. Grunewald
DOI:10.1021/jm00122a032
日期:1989.2
with m- and p-tyramine (9 and 10, respectively) is likely due to the restriction of the side-chain conformation. The conformationallydefined analogues 22-24 were less active than the conformationallyrestricted ones, 12-15, although the low-energy half-chair conformation of 2-aminotetralin is defined in 22-24. The reduced activity of 22-24 compared with the activity of 12-15 is probably due to the