Enantioselective synthesis of SNAP-7941: chiral dihydropyrimidone inhibitor of MCH1-R.
Enantioselective synthesis of SNAP-7941: chiral dihydropyrimidone inhibitor of MCH1-R.
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DOI:
10.1021/jo801463j
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发表时间:
2008-10-03
期刊:
影响因子:
--
通讯作者:
Schaus SE
中科院分区:
文献类型:
--
作者:
Goss JM;Schaus SE
An enantioselective synthesis of SNAP-7941, a potent melanin concentrating hormone receptor antagonist, was achieved using two organocatalytic methods. The first method utilized to synthesize the enantioenriched dihydropyrimidone core was the Cinchona alkaloid-catalyzed Mannich reaction of β-keto esters to acyl imines and the second was chiral phosphoric acid-catalyzed Biginelli reaction. Completion of the synthesis was accomplished via selective urea formation at the N3 position of the dihydropyrimidone with the 3-(4-phenylpiperidin-1-yl)propyl amine side chain fragment. The synthesis of SNAP-7921 highlights the utility of asymmetric organocatalytic methods in the construction of an important class of chiral heterocycles.
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