2,4-二硝基间苯二酚 、 硝化酸混合物 以Apparently, however, styphnic acid (2,4,6-trinitroresorcinol), an undesirable and explosive side product, is also produced in fairly substantial quantities的产率得到2,4,6-三硝基间苯二酚,收敛酸
Fused heterocyclic succinimide compounds and analogs thereof, modulators of nuclear hormone receptor function
申请人:——
公开号:US20040077605A1
公开(公告)日:2004-04-22
Fused cyclic compounds, methods of using such compounds in the treatment of nuclear hormone receptor-associated conditions such as cancer and immune disorders, and pharmaceutical compositions containing such compounds.
The present invention relates to novel cephalosporin derivatives or pharmaceutically acceptable non-toxic salts thereof useful as antibiotics and to processes for the preparation thereof. ##STR1## wherein: R.sup.1 is a hydrogen or an optionally halogen-substituted C.sub.1-3 alkyl group, a propargyl group or --C(R.sup.a)(R.sup.b)COOH, wherein R.sup.1 and R.sup.b are independently a hydrogen or a C.sub.1-3 alkyl group; R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are independently a hydrogen or halogen or a C.sub.1-3 alkyl, amino or hydroxy C.sub.1-3 alkylthio, cyano, carbamoyl, carboxyl, hydroxy C.sub.1-3 alkyl, nitro, acetyl or formyl group; and Q is CH, N or CCl.
Compounds of the formula: ##STR1## wherein R.sup.1 and R.sup.2 each individually are hydrogen or lower alkyl optionally substituted by aryl or C.sub.3-6 -cycloalkyl; R.sup.4 and R.sup.5 either both are hydrogen or both are halogen or one is hydrogen and the other is halogen, hydroxy, lower alkoxy, aryloxy or amino; and R.sup.3 is hydrogen or, where no primary or secondary amino group is present, alkanoyl; with the proviso that all the groups R.sup.1 through R.sup.5 cannot simultaneously be hydrogen; as well as pharmaceutically acceptable salts of compounds of formula I with acids have valuable pharmacodynamic properties as non-competitive NMDA antagonists and can accordingly be used as neuroprotectives.
Synthesis of 4,5-dihydro-pyrazolo [3,4-c] pyrid-2-ones
申请人:Zhou Jiacheng
公开号:US20050245566A1
公开(公告)日:2005-11-03
A novel process and intermediates thereof for making 4,5-dihydro-pyrazolo[3,4-c]pyrid-2-ones of the type shown below from appropriate phenyl hydrazines is described.
These compounds are useful as factor Xa inhibitors.
Organosilicon polymers, and dyes, exhibiting nonlinear optical response
申请人:Herecules Incorporated
公开号:US05605726A1
公开(公告)日:1997-02-25
Organosilicon polymers, including crosslinked polymers and crosslinkable prepolymers, of cyclic polysiloxanes, organic dyes, and, optionally, polyenes. The dyes include those with delocalized Pi electron systems linking electron donor groups and electron acceptor groups, and with at least two carbon-carbon double bond-containing pendant groups attached to at least two different sites from among the indicated delocalized Pi electron systems, donor groups, and acceptor groups. Also disclosed are optical substrates coated with the organosilicon crosslinked polymers exhibiting second order non-linear optical susceptibility.