Steroidal oxathiazine inhibitors of estrone sulfatase
摘要:
The presence of estrone sulfatase in breast tumors and the high levels of circulating estrone sulfate may contribute the major portion of estrogen synthesized locally in breast tissues through conversion of estrone sulfate to estrone by the enzyme. Using inhibitors of estrone sulfatase for the treatment of estrogen-dependent (estrogen receptor positive, ER+) breast cancer could be a very effective therapeutic strategy for the treatment of estrogen-dependent breast tumors in postmenopausal women. Therefore, we designed and synthesized several steroidal 2',3-oxathiazines that inhibit estrone sulfatase and have greatly reduced estrogenic side effects. Our in vitro studies indicate that the oxathiazine compounds have inhibitory activity on estrone sulfatase in MCF-7 human breast cancer cells. These estrone sulfatase inhibitors (ESIs) also inhibit the growth of MCF-7 cells induced by estrone sulfate. In addition, our in vivo experiments demonstrate that our ESIs have moderate antitumor activity against MCF-7 breast cancer xenografts in Balb/c athymic nude mice. The synthesis and biological activity of a number of these unique steroidal ESIs are described. (C) 2002 Elsevier Science Inc. All rights reserved.
[EN] STEROID INHIBITORS OF ESTRONE SULFATASE, AND ASSOCIATED PHARMACEUTICAL COMPOSITIONS AND METHODS OF USE<br/>[FR] STEROIDES INHIBITEURS DE L'OESTRONE SULFATASE, COMPOSITIONS PHARMACEUTIQUES ASSOCIEES ET PROCEDES D'UTILISATION
申请人:SRI INTERNATIONAL
公开号:WO1998032763A1
公开(公告)日:1998-07-30
(EN) Novel compounds useful as inhibitors of estrone sulfatase are provided. The compounds have structural formula (I), wherein X and Y, or Y and Z, form an oxathiazine dioxide ring or a dihydro-oxathiazine dioxide ring, and the other various substituents are as defined herein. Also provided are pharmaceutical compositions and methods for using the compounds of formula (I) to inhibit the enzymatic activity of estrone sulfatase and to treat estrogen-dependent disorders.(FR) La présente invention concerne de nouveaux composés efficaces comme inhibiteurs de l'oestrone sulfatase, composés qui sont représentés par la formule (I) dans laquelle X et Y, ou Y et Z forment un noyau de dioxyde d'oxathiazine ou un noyau de dioxyde dihydro-oxathiazine, les autres différents substituants étant tels que définis dans la description. L'invention présente également des compositions pharmaceutiques et des procédés destinés à l'utilisation des composés de la formule (I) élaborés pour inhiber l'activité enzymatique de l'oestrone sulfatase et traiter les troubles liés aux oestrogènes.
Steriod inhibitors of estrone sulfatase and associated pharmaceutical
申请人:SRI International
公开号:US05763432A1
公开(公告)日:1998-06-09
Novel compounds useful as inhibitors of estrone sulfatase are provided. The compounds have the structural formula (I) ##STR1## wherein X and Y, or Y and Z, form an oxathiazine dioxide ring or a dihydro-oxathiazine dioxide ring, and the other various substituents are as defined herein. Pharmaceutical compositions and methods for using the compounds of formula (I) to treat estrogen-dependent disorders are provided as well.
Steroidal oxathiazine inhibitors of estrone sulfatase
作者:Richard H Peters、Wan-Ru Chao、Barbara Sato、Kazuhiko Shigeno、Nurulain T Zaveri、Masato Tanabe
DOI:10.1016/s0039-128x(02)00118-6
日期:2003.1
The presence of estrone sulfatase in breast tumors and the high levels of circulating estrone sulfate may contribute the major portion of estrogen synthesized locally in breast tissues through conversion of estrone sulfate to estrone by the enzyme. Using inhibitors of estrone sulfatase for the treatment of estrogen-dependent (estrogen receptor positive, ER+) breast cancer could be a very effective therapeutic strategy for the treatment of estrogen-dependent breast tumors in postmenopausal women. Therefore, we designed and synthesized several steroidal 2',3-oxathiazines that inhibit estrone sulfatase and have greatly reduced estrogenic side effects. Our in vitro studies indicate that the oxathiazine compounds have inhibitory activity on estrone sulfatase in MCF-7 human breast cancer cells. These estrone sulfatase inhibitors (ESIs) also inhibit the growth of MCF-7 cells induced by estrone sulfate. In addition, our in vivo experiments demonstrate that our ESIs have moderate antitumor activity against MCF-7 breast cancer xenografts in Balb/c athymic nude mice. The synthesis and biological activity of a number of these unique steroidal ESIs are described. (C) 2002 Elsevier Science Inc. All rights reserved.