从[13C 6]-丙酸开始制备B 6组的[13 C 16]标记的维生素(PN,PL和PM)。以十个线性步骤合成了[13 C 18] -PN,总产率为17%。因此,所涉及的酯的更高的烷基同系物对所选合成途径中的中间体的反应结果显示出积极的影响。用高锰酸钾和甲胺将[13C 4] -PN氧化为[13 C 8] -PL,然后酸水解亚胺衍生物。可以通过用钯氢化由[13C 6] -PN的肟衍生物制备[13 C 8] -PM。
[EN] METHODS AND COMPOSITIONS OF NOVEL TRIAZINE COMPOUNDS<br/>[FR] METHODES ET COMPOSITIONS A BASE DE NOUVEAUX COMPOSES DE TRIAZINE
申请人:REDDY US THERAPEUTICS INC
公开号:WO2004026844A1
公开(公告)日:2004-04-01
The present invention relates to methods and compositions comprising compounds that treat pathophysiological conditions arising from inflammatory responses. In particular, the present invention is directed to compounds that inhibit or block glycated protein produced induction of the signaling-associated inflammatory response in endothelial cells. The present invention relates to compounds that inhibit smooth muscle proliferation. In particular, the present invention is directed to compounds that inhibit smooth muscle cell proliferation by modulating HSPGs such as Perlecan. The present invention further relates to the use of compounds to treat vascular occlusive conditions characterized by smooth muscle proliferation such as restenosis and atherosclerosis.
Silane Reduction of 5-Hydroxy-6-methyl-pyridine-3,4-dicarboxylic Acid Diethyl Ester: Synthesis of Vitamin B6
作者:Yves Dumond、Andrew Gum
DOI:10.3390/81200873
日期:——
Alternative methods for the synthesis of pyridoxine have been investigated. The key intermediate, 5-hydroxy-6-methyl-pyridine-3,4-dicarboxylic acid diethyl ester (5), was reduced with either a silane monomer (MeSiH(OEt)2) or a polysiloxane (polymethylhydrosiloxane, PMHS) to afford crude pyridoxine. An isolation technique utilizing a commercially available resin was devised, affording the desired product, vitamin B6, in an overall yield of 38-54 % and a purity of 76%.
A convergent total synthesis of mappicine ketone: A leading antiviral compound
作者:J.S. Yadav、Sanjita Sarkar、S. Chandrasekhar
DOI:10.1016/s0040-4020(99)00191-x
日期:1999.4
An efficient total synthesis of the naturally occuring mappicineketone 1 and mappicine 2 are described. The approach is based on the assembly of tricyclic amine 5 with pseudo acid chloride 20. A Friedlander condensation is utilized for the construction of the ABC skeleton and a periselective Diels-Alder approach is utilized for the preparation of the pseudo acid chloride.
The present invention relates to aryl olefinic azacyclic compounds and aryl acetylenic azacyclic compounds, including pyridyl olefinic cycloalkylamines and pyridyl acetylenic cycloalkylamines. The present invention also relates to prodrug derivatives of the compounds of the present invention.