Indole derivatives which inhibit steroid 5.alpha. reductase
申请人:Kyowa Hakko Kogyo Co., Ltd.
公开号:US05239083A1
公开(公告)日:1993-08-24
The present invention provides Indole derivatives represented by the formula (I) ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 independently represent hydrogen or lower alkyl; R.sup.4 represents hydrogen, lower alkyl or cycloalkyl; R.sup.5 represents hydrogen, substituted or unsubstituted cycloalkyl, substituted or unsubstituted cycloalkenyl, --CHR.sup.7 R.sup.8 where R.sup.7 and R.sup.8 independently represent hydrogen, alkyl, alkenyl, alkynyl, substituted or unsubstituted cycloalkyl, --(CH.sub.2).sub.m OR.sup.9 (wherein m is an integer of 1-3 and R.sup.9 is lower alkyl), substituted or unsubstituted aryl, substituted or unsubstituted pyridyl, substituted or unsubstituted furyl, or substituted or unsubstituted thienyl], ##STR2## (wherein Y is CH.sub.2, O, S, CH.sub.2 --CH.sub.2, CH.dbd.CH, CH.sub.2 --O or CH.sub.2 --S); R.sup.6 represents hydrogen, lower alkyl or lower alkoxy or halogen; X represents O or S(O)q (wherein q is an integer of 0-2); and n represents an integer of 1-6) or pharmaceutically acceptable salt thereof. The compound shows prominent inhibition effects on steroid 5.alpha.-reductase activity, and are useful in treating benign prostatic hypertrophy, prostate cancer, baldness and acne.
本发明提供了由式(I)表示的吲哚衍生物,其中R.sup.1、R.sup.2和R.sup.3独立地代表氢或较低的烷基;R.sup.4代表氢、较低的烷基或环烷基;R.sup.5代表氢、取代或未取代的环烷基、取代或未取代的环烯基、--CHR.sup.7 R.sup.8(其中R.sup.7和R.sup.8独立地代表氢、烷基、烯基、炔基、取代或未取代的环烷基、--(CH.sub.2).sub.m OR.sup.9(其中m为1-3的整数,R.sup.9为较低的烷基)、取代或未取代的芳基、取代或未取代的吡啶基、取代或未取代的呋喃基或取代或未取代的噻吩基),##STR2##(其中Y为CH.sub.2、O、S、CH.sub.2 --CH.sub.2、CH.dbd.CH、CH.sub.2 --O或CH.sub.2 --S);R.sup.6代表氢、较低的烷基或较低的烷氧基或卤素;X代表O或S(O)q(其中q为0-2的整数);n代表1-6的整数)或其药学上可接受的盐。该化合物对类固醇5α-还原酶活性具有显著的抑制作用,并可用于治疗良性前列腺增生、前列腺癌、秃头和痤疮。