[Zn7{(2-C5H4N)CH(OH)PO3}6(H2O)6]SO4·4H2O: A Zinc Phosphonate Cluster with a Drum-like Cage Structure
摘要:
Direct reaction of hydroxy(2-pyridyl)methylphosphonic acid with zinc sulfate under hydrothermal conditions results in the formation of the novel heptanuclear cluster compound [Zn-7{(2-C5H4N)CH(OH)PO3}(6)(H2O)(6)]SO4 center dot 4H(2)O (1). The inorganic core of the cluster can be described as a cylindrical drum made up of six Zn atoms bridged by six {CPO3} units that is centered by a seventh Zn atom. Crystal data: monoclinic, C2/c, a = 22.690(2) angstrom, b = 16.675(2) angstrom, c 18.151(2) angstrom, beta = 93.390(2)degrees.
Novel hydroxyphosphonate inhibitors of CD-45 tyrosine phosphatase
作者:Roger F. Frechette、Caridad Ackerman、Scott Beers、Rich Look、John Moore
DOI:10.1016/s0960-894x(97)00390-9
日期:1997.9
CD-45 tyrosine phosphatase [E.C. 3.1.3.48] is an important player in the regulation of cell activation and proliferation in hematopoetic cells. As part of a program in immune response modulation, we prepared the first series of small organic molecule inhibitors of CD-45. The preparation and in vitro screening of these hydroxyphosphonates is described herein. (C) 1997 Elsevier Science Ltd.