Development of a Chemoenzymatic Route to (R)-Allyl-(3-amino-2-(2-methylbenzyl)propyl)carbamate
摘要:
A chemoenzymatic route to (R)-allyl-(3-amino-2-(2-methylbenzyl)propyl)carbamate (1-(R)) has been developed on a kilogram scale. The key intermediate, 2-(2-methylbenzyl)propane-1,3-diamine 4, was isolated as a tartrate salt in a three-step sequence starting from 2-methylbenzyl chloride. The subsequent lipase-catalyzed desymmetrization was optimized, and 1-(R) was isolated as the d-tartrate salt.
Novel Pyrimidine- And Triazine-Hepcidine Antagonists
申请人:Dürrenberger Franz
公开号:US20120202806A1
公开(公告)日:2012-08-09
The present invention relates to new hepcidin antagonists, pharmaceutical compositions containing them and the use thereof as a drug, in particular for the treatment of iron metabolism disorders such as, in particular, iron deficiency diseases and anaemia, in particular anaemia associated with chronic inflammatory disease (ACD: anaemia of chronic disease and AI: anaemia of inflammation).
Asymmetric Mannich Reaction of N-Boc Imines with Alkylmalononitriles Catalyzed by Dinuclear PhosphoiminoBINOL-Pd Complex
作者:Takayoshi Arai、Ayu Nakamura
DOI:10.1055/s-0037-1611842
日期:2019.7
PhosphoiminoBINOL-Pd2(OAc)2 complex catalyzed asymmetricMannichreaction of N-Boc imines with alkyl malononitriles, with assistance of Zn(OAc)2 gave chiral amines with adjacent all-carbon quaternary carbon centers in up to 99% yield with 94% ee.
Chiral Dinuclear Benzyliminobinaphthoxy‐Palladium Catalyst for Asymmetric Mannich Reaction of Aldimines and Isatin‐Derived Ketimines with Alkylmalononitriles
A newly developed dinuclear bis(benzylimino)binaphthol (BIB )−Pd complex showed good catalytic activity for the Mannichreaction of aldimines and isatin‐derived ketimines with alkylmalononitriles to give the products in a highlyenantioselective manner.
employed as substrates to explore Lewis base-catalyzed annulation reactions. This leads to the discovery of a phosphine-catalyzed [3+2] annulation of 1 with electron-deficient alkenes for the construction of exocyclic olefinic cyclopentenes in good yields and moderate E:Z ratios undermildconditions. The annulation is believed to proceed in a tandem [3+2] cyclization and double bond migration in which the
Electrochemical oxidative cross-coupling for the construction of C(sp3)-C(sp3) bond
作者:Kang-Min Wen、Xi-Hao Chang、Chang Guo
DOI:10.1055/a-2309-1501
日期:——
method involving para-cresol derivatives and malononitrile derivatives has been developed utilizing undivided electrolytic conditions. This electrochemical approach offers a robust route for synthesizing diverse malononitrile derivatives featuring quaternary carbon centers and incorporating para-phenol groups. Notably, the direct electrooxidation of the C(sp3)–H bond in the para-cresol derivative plays