- Guanidine Synthesis: Use of Amidines as Guanylating Agents
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The use of amidines for the tandem or one-pot synthesis of guanidines is reported. Guanidines are obtained by oxidative rearrangement of readily available and stable amidines into carbodiimides, followed by in situ reaction with amines. The protocol can be executed under mild reaction conditions (30°C), in a green solvent (dimethyl carbonate). The amine scope is broad, including sterically hindered, oxidation-sensitive and chiral amines. Examples for the synthesis of both acyclic and cyclic guanidines are provided. 2-Propoxyphenyl iodide (2-PrOPhI) by-product, generated from the oxidant [N-(p-toluenesulfonyl)imino](2-propoxyphenyl)iodinane (2-PrOPhINTs), can be isolated in high yields making regeneration of the hypervalent iodine reagent possible. The utility and greenness of the synthetic method versus the state-of-the-art is demonstrated by a new route towards the antihypertensive drug Pinacidil. The process mass intensity (PMI) of the new route is only 24% of the classical one.
- Baeten, Mattijs,Maes, Bert U. W.
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supporting information
p. 826 - 833
(2016/03/12)
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- PYRIMIDINES AND PYRIDINES USEFUL AS INHIBITORS OF PROTEIN KINASES
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The present invention relates to compounds useful as inhibitors of protein kinases, such as inhibitors of GSK-3. The invention provides pharmaceutically acceptable compositions comprising the compounds of the invention and methods of using the compositions in the treatment of various disorders. The invention provides processes for preparing compounds of the invention. The invention provides methods of identifying compounds useful for treatment of diabetes, diabetic neuropathy, osteoporosis, Alzheimer's disease, Huntington's disease, Parkinson's disease, AIDS-associated dementia, bipolar disorder, amyotrophic lateral sclerosis, multiple sclerosis, schizophrenia, leukocytopenia, cardiomyocyte hypertrophy, stroke, post-stroke, spinal cord injury, traumatic brain injury, Charcot-Marie-Tooth, peripheral nerve regeneration, and rheumatoid arthritis.
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Page/Page column 47
(2009/12/27)
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- AMINOPYRIMIDINES USEFUL AS INHIBITORS OF PROTEIN KINASES
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The present invention relates to compounds of formula I useful as inhibitors of protein kinases. The invention also provides pharmaceutically acceptable compositions comprising those compounds and methods of using the compounds and compositions in the treatment of various disease, conditions, and disorders. The invention also provides processes for preparing compounds of the invention
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Page/Page column 48
(2008/12/07)
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- AMINOPYRIMIDINES USEFUL AS INHIBITORS OF PROTEIN KINASES
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The present invention relates to compounds useful as inhibitors of protein kinase. The invention also provides pharmaceutically acceptable compositions comprising said compounds and methods of using the compositions in the treatment of various disease, conditions, or disorders. The invention also provides processes for preparing compounds of the inventions.
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Page/Page column 52
(2008/12/06)
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- 2,4-disubstituted-5-cyano-1,6-dihydro-6-oxo-1-pyrimidineacetic acid aldose reductase inhibitors
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Disclosed herein are 2,4-disubstituted-5-cyano-1,6-dihydro-6-oxo-1-pyrimidineacetic acids and pharmaceutically acceptable salts thereof and methods of their preparation. The compounds are new aldose reductase inhibitors useful for the treatment or prevention of diabetic complications.
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