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Diastereoselective Syntheses of (3R*,4R*)- and (3R*,4S*)-4-Aryl-3-methyl-4-piperidinemethanol and Fluoro Analogues
被引:3
|作者:
Schmitt, Sebastien
[1
,2
,3
]
Brown, Richard C. D.
[4
]
Perrio, Cecile
[1
,2
,3
]
机构:
[1] CNRS, LDM TEP, UMR ISTCT 6301, GIP Cyceron, F-14074 Caen, France
[2] Univ Caen Basse Normandie, LDM TEP, UMR ISTCT 6301, GIP Cyceron, F-14074 Caen, France
[3] CEA, DSV I2BM, UMR ISTCT 6301, LDM TEP,GIP Cyceron, F-14074 Caen, France
[4] Univ Southampton, Sch Chem, Southampton SO17 1BJ, Hants, England
来源:
关键词:
DIRECT ALPHA-ARYLATION;
NUCLEOPHILIC-SUBSTITUTION;
OPIOID ANTAGONISTS;
ARYL HALIDES;
NITRILES;
POTENT;
DISCOVERY;
IDENTIFICATION;
MILD;
D O I:
10.1021/jo302303h
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
Two concise and high-yielding diastereoselective syntheses of 4-aryl-3-methyl-4-piperidinemethanols were realized from 1,3-dimethyl-4-piperidinone. The key reactions to control the C3-C4 relative stereochemistry were the alkoxymethylation of a metalloenamine generated from 4-aryl-3-methyl-1,2,3,6-tetrahydropyridine that afforded the (3R*,4S*)-form and the nucleophilic substitution of a fluoroarene with deprotonated 3-methyl-4-piperidinenitrile giving the (3R*,4R*)-isomer. The corresponding fluoromethyl analogues were subsequently obtained through the fluorination of the piperidinemethanols using DAST.
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页码:1222 / 1229
页数:8
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