Structure dependence in the solvolysis kinetics of amino acid esters
作者:John Haseltine、Jason W. Runyon
DOI:10.1016/j.tetlet.2010.04.063
日期:2010.6
To better understand acyl transfer reactions of oligopeptides, seventeen N-acyl amino acid esters were solvolyzed in mildly basic methanol-d4. All show pseudo-first-order kinetics by 1H NMR. The rate constant varies up to 400-fold with the identity of the amino acid and up to 6200-fold with the identity of the N-acyl group. The impact of the N-acyl group on the rate constant is discussed in terms of
为了更好地理解寡肽的酰基转移反应,在温和的碱性甲醇-d 4中溶剂化了十七种N-酰基氨基酸酯。通过1 H NMR均显示拟一级动力学。速率常数随氨基酸的同一性而变化多达400倍,而随着N-酰基的同一性而变化高达6200倍。根据拥挤,酰胺构象和酰胺CO键特征讨论了N-酰基对速率常数的影响。
METHODS OF ADMINISTERING MONOMETHYL FUMARATE AND PRODRUGS THEREOF HAVING REDUCED SIDE EFFECTS
申请人:XenoPort, Inc.
公开号:US20150038499A1
公开(公告)日:2015-02-05
Methods of improving patient safety and reducing undesirable side effects for patients considering therapeutic treatment using monomethyl fumarate and prodrugs of monomethyl fumarate are disclosed. In particular, a method of treating a disease in a patient in need of such treatment is provided. The method comprises testing the patient for a propensity for a deficiency in tissue glutathione S-transferase theta 1 enzyme (GSTT1) levels. Thereafter, a therapeutically effective amount of a compound selected from monomethyl fumarate (MMF), a prodrug of monomethyl fumarate, and combinations thereof is administered to the patient. During the treatment of the disease, blood lymphocyte concentration is periodically tested in the patient at a predetermined time interval length that is based on the enzyme level propensity testing result.
SUBSTITUTED CYCLOPROPYL COMPOUNDS USEFUL AS GPR119 AGONISTS
申请人:Merck Sharp & Dohme Corp.
公开号:US20140329798A1
公开(公告)日:2014-11-06
Substituted cyclopropyl compounds of the formula (I): and pharmaceutically acceptable salts thereof are disclosed as useful for treating or preventing type 2 diabetes and similar conditions. The compounds are useful as agonists of the G-protein coupled receptor GPR-119. Pharmaceutical compositions and methods of treatment are also included