通过使用NiBr(2)·二甘醇二甲醚原位形成的催化剂和pybox配体(两者均可商购),我们实现了未活化叔烷基亲电试剂偶联反应的第一个实例,并取得了首次成功镍催化偶联产生除 CC 键以外的键。具体来说,我们已经确定,这种催化剂在温和条件下完成了未活化的叔、仲和伯烷基卤化物与二硼试剂的宫浦型硼酸化反应,以提供烷基硼酸酯,这是一个具有实质性(并扩大)效用的化合物家族;事实上,叔烷基溴的 umpolung 硼酸化可以在低至 -10 °C 的温度下实现。该方法表现出良好的官能团兼容性和区域特异性,这两者都可能是合成烷基硼酸酯的传统方法的问题。与看似相关的镍催化 CC 键形成过程相反,在这种镍催化的 CB 键形成反应中,叔卤化物比仲卤化物或伯卤化物更具反应性;鉴于两种转化都可能遵循氧化加成的内球电子转移途径,这种差异尤其值得注意。
The embodiments provide Compound KC-8, N-1-[3-(oxycodone-6-enol-carbonyl-methyl-amino)-2,2-dimethyl-propylamine]-arginine-glycine-malonic acid, or acceptable salts, solvates, and hydrates thereof. The present disclosure also provides compositions, and their methods of use, where the compositions comprise a prodrug, Compound KC-8, that provides controlled release of oxycodone. Such compositions can optionally provide a trypsin inhibitor that interacts with the enzyme that mediates the controlled release of oxycodone from the prodrug so as to attenuate enzymatic cleavage of the prodrug.
Tetraalkllleads (R4Pb) reacted quite smoothly with aldehydes R′CHO in the presence of TiCl4 to produce the corresponding alcohols (RCHOHR′) in high to good yields. The reagent system, R4Pb/TiCl4, exhibited high chemoselectivity; only aldehydes underwent the alkylation in the presence of ketones. Further, the newreagent exhibited high 1,2- and 1,3-asymmetric induction. The transfer order of alkyl groups
Cobalt(II)-porphyrin complex 1 and 2 catalyses the chlorination and sulfochlorination respectively of n-alkanes and cycloalkanes with sulfurylchloride in benzene. The p-substituent of the benzene ring in the porphyrin complex 1 and 2 shows a remarkable chemoselectivity in these reactions.
[EN] QUINAZOLINE DERIVATIVES AND THEIR USE AS DNA METHYLTRANSFERASE INHIBITORS<br/>[FR] DÉRIVÉS DE QUINAZOLINE ET LEUR UTILISATION EN TANT QU'INHIBITEURS DE L'ADN MÉTHYLTRANSFÉRASE
申请人:PF MEDICAMENT
公开号:WO2015040169A1
公开(公告)日:2015-03-26
The present invention relates to compounds of the following formula (I): and pharmaceutically acceptable salts and solvates thereof, their methods of preparation, their use as a drug, notably in the treatment of cancer, and pharmaceutical compositions containing such compounds.
COMPOSITIONS FOR REDUCING RISK OF ADVERSE EVENTS CAUSED BY DRUG-DRUG INTERACTIONS
申请人:JENKINS Thomas E.
公开号:US20120232066A1
公开(公告)日:2012-09-13
The present disclosure provides a composition comprising a GABA
A
agonist and a GI enzyme inhibitor. The present disclosure also provides a composition comprising (a) a GI enzyme inhibitor and (b) a first drug that interacts with a second drug to produce an adverse effect when the second drug is co-ingested as a GI enzyme-cleavable prodrug with the first drug. Such an interaction can be additive or synergistic.