主题：【求助】(已应助)求助2篇文献

文献1：
title:Bisphosphonate prodrugs: Synthesis and in vitro evaluation of alkyl and acyloxymethyl esters of etidronic acid as bioreversible prodrugs of etidronate
authors:Niemi, Riku; Turhanen, Petri; Vepsalainen, Jouko; Taipale, Hannu; Jarvinen, Tomi
Abbreviated serial title:Eur J Pharm Sci
Volume:     v 11 Issue:  n 2  Issue date:     Aug        Publication year:     2000  Pages:     p 173-180
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文献2：
title：Preparation of (4-amino-1-hydroxybutylidene)bisphosphonic acid sodium salt, MK-217 (alendronate sodium). An improved procedure for the preparation of 1-hydroxy-1,1-bisphosphonic acids
authors：Kieczykowski, Gerard R.; Jobson, Ronald B.; Melillo, David G.; Reinhold, Donald F.; Grenda, Victor J.; Shinkai, Ichiro
Serial title:Journal of Organic Chemistry
Volume:     v 60  Issue:  n 25  Issue date:     Dec 15
Publication year:     1995  Pages:  p 8310

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