First Practical Synthesis of Formamidine Ureas and Derivatives
作者:Amy S. Ripka、David D. Díaz、K. Barry Sharpless、M. G. Finn
DOI:10.1021/ol034287r
日期:2003.5.1
Isonitriles and ureas undergo a condensation reaction in the presence of acid chlorides to give formamidineureas, for which no general synthetic routes currently exist. A mechanism is proposed in which the key intermediate is an electrophilic adduct of isonitrile and acid chloride. The process is tolerant of moderate variability in the nature of the components, and access to formamidineureas of varying
The present invention demonstrates the utility of carbonic acid amides such as urea or its derivatives, carbamates, carbodiimides & thiocarbamides as nitrogenous supplements in fermentation media for production of recombinant proteins to achieve enhanced bioconversion rates and peptides like insulin and insulin analogues, exendin and enzymes such as lipase using methanol inducible fungal expression systems such as
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The invention provides methods and compositions for treating conditions mediated FLT-3. The invention also provides methods of using the compounds and/or compositions in the treatment of a variety of diseases and unwanted conditions in subjects.
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