Identification of HUHS190, a human naftopidil metabolite, as a novel anti-bladder cancer drug
摘要:
We carried out structure-activity relationship study on anti-cancer effects of naftopidil (1) and its metabolites, resulted in identification of 1-(4-hydroxy-2-methoxyphenyl)piperazin-1-yl)-3-(naphthalen-1-yloxy) propan-2-ol (2, HUHS190), a major human metabolite of 1, which exhibited the most selective toxicities between against normal and cancer cells (Table 1). 2 was more hydrophilic compared to 1, was enough to be prepared in high concentration solution of more than 100 mu M in saline for an intravesical instillation drug. Moreover, serum concentration of 2 was comparable to that of 1, an oral preparation drug, after oral administration at 32 mg/kg (Fig. 3). Both of 1 and 2 showed broad-spectrum anti-cancer activities in vitro, for example, 1 and 2 showed inhibitory activity IC50 = 21.1 mu M and 17.2 mu M for DU145, human prostate cancer cells, respectively, and IC50 = 18.5 mu M and 10.5 mu M for T24 cells, human bladder cancer cells. In this study, we estimated anticancer effects of 2 in a bladder cancer model after intravesical administration similar to clinical cases. A single intravesical administration of 2 exhibited the most potent inhibitory activities among the clinical drugs for bladder cancers, BCG and Pirarubicin, without obvious side effects and toxicity (Fig. 4). Thus, HUHS190 (2) can be effective for patients after post-TURBT therapy of bladder cancer without side effects, unlike the currently available clinical drugs.
Es wird über die Synthese von vier potentiellen Metaboliten [Desmethyl‐Naftopidil (1), 4‐(Phenyl)‐hydroxy‐Naftopidil (2), 4‐(Naphthyl)‐hydroxy‐Naftopidil (3), Desanaphthyl‐Naftopidil (4)] des selektiven α1‐Antagonisten Naftopidil berichtet.
Piperazine derivatives, uses thereof and pharmaceutical compositions
申请人:Boehringer Mannheim GmbH
公开号:US05037828A1
公开(公告)日:1991-08-06
The present invention provides compounds of the general formula: ##STR1## wherein R.sub.1 is a hydroxyl group or a methoxy radical, R.sub.2 is a hydrogen atom or a hyroxyl group and R.sub.3 is a hydrogen atom or a hydroxyl group, with the proviso that R.sub.2 and R.sub.3 are not simultaneously hydrogen atoms when R.sub.1 is a methoxy radical; and the pharmacologically acceptable salts thereof. The present invention also provides processes for the preparation of these compounds and pharmaceutical compositions containing them.
Evidence of an effective antiarrhythmic compound by study of in vivo metabolisation
作者:J Pascal
DOI:10.1016/0223-5234(90)90214-n
日期:1990.4
Hydroxylierte 1-Phenyl-4-[3-(naphth-1-yl-oxy)-2-hydroxypropyl]-piperazine, Verfahren zu ihrer Herstellung sowie Arzneimittel, die diese Verbindungen enthalten
申请人:BOEHRINGER MANNHEIM GMBH
公开号:EP0401652B1
公开(公告)日:1994-08-17
N-(4-{[PYRIDIN-3-YL-METHYL)CARBAMOYL]AMINO}BENZENE-SULFONE DERIVATIVES AS NAMPT INHIBITORS FOR THERAPY OF DISEASES SUCH AS CANCER