Compounds of the formula (I):
were synthesized. In at least one embodiment, they were found to down-regulate or inhibit the expression or function of the IGF-1 receptor.
公式(I)的化合物被合成。在至少一个实施例中,发现它们能够下调或抑制IGF-1受体的表达或功能。
The Chemistry of Acylals. 3. Cyanohydrin Esters from Acylals with Cyanide Reagents
作者:Marcel Sandberg、Leiv K. Sydnes
DOI:10.1021/ol005535b
日期:2000.3.1
[reaction: see text] When treated with KCN in DMSO at room temperature, acylals from aliphatic aldehydes gave the corresponding cyanohydrin esters in good to excellent yields. Acylals from aromatic aldehydes were less reactive and gave several byproducts in addition to fair yields of cyanohydrin under the same conditions. Trimethylsilyl cyanide mixed with titanium(IV) chloride afforded cyanohydrin
(S)-selective Candida antarctica lipase B and then by the unselective pig liver esterase. The method could be used for analysis of products obtained from a number of aromatic aldehydes and aliphatic ketonitriles. Microreactor technology was successfully combined with high-throughputanalysis for efficient catalyst optimization.
Catalytic Hydrogenation of Cyanohydrin Esters as a Novel Approach toN-Acylated β-Amino Alcohols – Reaction Optimisation by a Design of Experiment Approach
作者:Lars Veum、Silvia R. M. Pereira、Jan C. van der Waal、Ulf Hanefeld
DOI:10.1002/ejoc.200500870
日期:2006.4
The catalytic hydrogenation of acylatedcyanohydrins and subsequent intramolecular migration of the acyl group to yield pharmaceutically interesting N-acyl β-amino alcohols is shown to be a successful one-pot preparation method. The combination of a multistep DoE approach and high-throughput methodology proved to be an effective strategy for the optimisation of the reaction. With the favoured catalyst/solvent
A minorenantiomerrecycling one‐pot procedure employing two reinforcing chiral catalysts has been developed. Continuous regeneration of the achiral starting material is effected via selective enzyme‐catalyzed hydrolysis of the minor product enantiomer from Lewis acid–Lewis base catalyzed addition of acyl cyanides to prochiral aldehydes in a two‐phase solvent system. The process provides O‐acylated
已开发出一种使用两种增强手性催化剂的较小对映体回收一锅法。非手性原料的连续再生是通过路易斯酸-刘易斯碱在两相溶剂体系中将酰基氰化物加成到手性醛中的次要产物对映异构体的选择性酶催化水解来实现的。该方法提供的O-酰化氰醇接近完美的对映选择性,高于直接法获得的对映选择性,并且收率很高。(S,S)-salen Ti Lewis酸和南极假丝酵母脂肪酶B的组合可提供具有R绝对构型的产物,而相反的对映异构体可从(R,R)-salen Ti复合物和皱纹念珠菌脂肪酶。