Enantiopure bicyclic piperidinones: stereoselectivity in lactam enolate alkylations

被引:16
作者
Brewster, AG
Broady, S
Davies, CE
Heightman, TD
Hermitage, SA
Hughes, M
Moloney, MG
Woods, G
机构
[1] Univ Oxford, Dyson Perrins Lab, Dept Chem, Oxford OX1 3QY, England
[2] AstraZeneca, Macclesfield SK10 4TG, Cheshire, England
关键词
D O I
10.1039/b316037h
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The synthesis and alkylation of [4.3.0]-bicyclic lactams, derived from 6-oxopipecolic acid, have been investigated. Alkylation can proceed with predominantly exo-diastereoselectivity, but the efficiency of this process depends on the substitution at the hemiaminal ether system. These products can be readily deprotected to give substituted hydroxymethyl lactams in good yield.
引用
收藏
页码:1031 / 1043
页数:13
相关论文
共 77 条
[1]   An efficient access to enantiomerically pure substituted derivatives of pipecolic acid [J].
Agami, C ;
Comesse, S ;
Kadouri-Pichot, C .
JOURNAL OF ORGANIC CHEMISTRY, 2000, 65 (14) :4435-4439
[2]   Synthesis of enantiopure piperidines. Total synthesis of (2R,6S)-2-methyl-6-propylpiperidine [(-)-dihydropinidine] [J].
Amat, M ;
Llor, H ;
Hidalgo, J ;
Hernandez, A ;
Bosch, J .
TETRAHEDRON-ASYMMETRY, 1996, 7 (04) :977-980
[3]   Stereoselective α-amidoalkylation reactions of phenylglycinol-derived bicyclic lactams [J].
Amat, M ;
Escolano, C ;
Llor, N ;
Huguet, M ;
Pérez, M ;
Bosch, J .
TETRAHEDRON-ASYMMETRY, 2003, 14 (12) :1679-1683
[4]   Enantioselective synthesis of piperidine, indolizidine, and quinolizidine alkaloids from a phenylglycinol-derived δ-lactam [J].
Amat, M ;
Llor, N ;
Hidalgo, J ;
Escolano, C ;
Bosch, J .
JOURNAL OF ORGANIC CHEMISTRY, 2003, 68 (05) :1919-1928
[5]   On the configuration of (3R,8aS)-5-oxo-3-pheny-2,3,6,7,8,8a-hexahydro-5H-oxazolo[3,2-a]pyridine [J].
Amat, M ;
Llor, N ;
Escolano, C ;
Huguet, M ;
Pérez, M ;
Molins, E ;
Bosch, J .
TETRAHEDRON-ASYMMETRY, 2003, 14 (03) :293-295
[6]   Stereodivergent synthesis of enantiopure cis- and trans-3-ethyl-4-piperidineacetates [J].
Amat, M ;
Pérez, M ;
Llor, N ;
Bosch, J .
ORGANIC LETTERS, 2002, 4 (16) :2787-2790
[7]   Conjugate addition of organocuprates to chiral bicyclic δ-lactams.: Enantioselective synthesis of cis-3,4-disubstituted and 3,4,5-trisubstituted piperidines [J].
Amat, M ;
Pérez, M ;
Llor, N ;
Bosch, J ;
Lago, E ;
Molins, E .
ORGANIC LETTERS, 2001, 3 (04) :611-614
[8]   Pyrrolidinones derived from (S)-pyroglutamic acid:: penmacric acid and analogues -: Part V [J].
Anwar, M ;
Bailey, JH ;
Dickinson, LC ;
Edwards, HJ ;
Goswami, R ;
Moloney, MG .
ORGANIC & BIOMOLECULAR CHEMISTRY, 2003, 1 (13) :2364-2376
[9]   CHEMICALS FROM THE GLANDS OF ANTS [J].
ATTYGALLE, AB ;
MORGAN, ED .
CHEMICAL SOCIETY REVIEWS, 1984, 13 (03) :245-278
[10]   INTRAMOLECULAR SCHMIDT REACTION OF ALKYL AZIDES [J].
AUBE, J ;
MILLIGAN, GL .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1991, 113 (23) :8965-8966