A novel estrogen derivative represented by the formula: ##STR1## is useful for treating or preventing diseases caused by estrogen deficiency.
一种由以下公式表示的新型雌激素衍生物:##STR1##,可用于治疗或预防由雌激素缺乏引起的疾病。
NOVEL BONE-SEEKING ESTROGEN DERIVATIVE
申请人:SUMITOMO PHARMACEUTICALS COMPANY, LIMITED
公开号:EP0827951A1
公开(公告)日:1998-03-11
A novel estrogen derivative represented by the formula:
is useful for treating or preventing diseases caused by estrogen deficiency.
一种由式表示的新型雌激素衍生物:
可用于治疗或预防由雌激素缺乏引起的疾病。
US5962438A
申请人:——
公开号:US5962438A
公开(公告)日:1999-10-05
The Synthesis of 1,1-Cyclopropanediylbis(phosphonic acid)
作者:David W. Hutchinson、David M. Thornton
DOI:10.1055/s-1990-26811
日期:——
Tetraisopropyl 1,1-cyclopropanediylbis(phosphonate) has been synthesised by an intramolecular cyclisation of the thallium(I) salt of tetraisopropyl (3-iodo-1,1-propanediyl)bis(phosphonate). Dealkylation of the tetraisopropyl ester gave 1, 1-cyclopropanediyl-bis(phosphonic acid) in good yield.