397246-12-7Relevant articles and documents
Synthetic process of anti-hyperglycemic drug intermediate R-3-amino-piperidine dihydrochloride
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Paragraph 0056-0059, (2019/11/12)
The invention relates to a synthetic process of an anti-hyperglycemic drug intermediate R-3-amino-piperidine dihydrochloride. The synthetic process comprises the steps: using inexpensive L-glutamic acid as a starting material, and performing esterification, amino protection, reduction, hydroxyl protection, substitution, cyclization and removal of protecting groups for amino groups so as to obtainthe R-3-amino-piperidine dihydrochloride. Compared with the prior art, the synthetic process has cheap and easily available raw materials, good selectivity, good atomic economy, high total yield and mild reaction conditions, and is suitable for industrial production.
CALPAIN MODULATORS AND METHODS OF PRODUCTION AND USE THEREOF
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, (2017/09/27)
The present technology relates to compounds, kits, compositions, and methods useful for the treatment of fibrotic disease. In some aspects, the present technology provides for treatment of various diseases or disorders associated or mediated, at least in part, by calpains, such as CAPN1, CAPN2, and/or CAPN9. The present technology is generally applicable to compounds which inhibit myofibroblast differentiation.
(R) - 3-amino-piperidine dihydrochloride preparation method
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, (2017/01/09)
The invention discloses a method for preparing (R)-3-amino piperidine hydrochloride. D-glutamic acid is taken as a starting material, and the (R)-3-amino piperidine hydrochloride is obtained by reaction in the following five steps: (1) hydroxyl esterification and amido Boc protection; (2) ester reduction; (3) hydroxyl activation; (4) cyclization; (5) amino Boc removal protection. The preparation method disclosed by the invention is short in synthetic route and low in cost, and industrial production can be achieved.