Asymmetric synthesis of γ-chloro-α,β-diamino- and β,γ-aziridino-α-aminoacylpyrrolidines and -piperidines via stereoselective Mannich-type additions of N-(diphenylmethylene)glycinamides across α-chloro-N-sulfinylimines.
Asymmetric synthesis of γ-chloro-α,β-diamino- and β,γ-aziridino-α-aminoacylpyrrolidines and -piperidines via stereoselective Mannich-type additions of N-(diphenylmethylene)glycinamides across α-chloro-N-sulfinylimines.
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DOI:
10.3762/bjoc.8.239
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发表时间:
2012
影响因子:
2.7
通讯作者:
De Kimpe N
中科院分区:
文献类型:
--
作者:
Callebaut G;Mangelinckx S;Van der Veken P;Törnroos KW;Augustyns K;De Kimpe N
The asymmetric synthesis of new chiral γ-chloro-α,β-diaminocarboxylamide derivatives by highly diastereoselective Mannich-type reactions of N-(diphenylmethylene)glycinamides across chiral α-chloro-N-p-toluenesulfinylaldimines was developed. The resulting (SS,2S,3S)-γ-chloro-α,β-diaminocarboxylamides were formed with the opposite enantiotopic face selectivity as compared to the (SS,2R,3R)-γ-chloro-α,β-diaminocarboxyl esters obtained via Mannich-type addition of analogous N-(diphenylmethylene)glycine esters across a chiral α-chloro-N-p-toluenesulfinylaldimine. Selective deprotection under different acidic reaction conditions and ring closure of the γ-chloro-α,β-diaminocarboxylamides was optimized, which resulted in Nα-deprotected syn-γ-chloro-α,β-diaminocarboxylamides, N-sulfinyl-β,γ-aziridino-α-aminocarboxylamide derivatives, a trans-imidazolidine, and an Nα,Nβ-deprotected syn-γ-chloro-α,β-diaminocarboxylamide.
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影响因子:
2.1
作者:
Koriyama, Y;Nozawa, A;Shimizu, M
通讯作者:
Shimizu, M
影响因子:
15
作者:
Manthorpe, JM;Gleason, JL
通讯作者:
Gleason, JL
影响因子:
5.2
作者:
Denolf, Bram;Mangelinckx, Sven;De Kimpe, Norbert
通讯作者:
De Kimpe, Norbert
影响因子:
3.6
作者:
DEKIMPE, N;SULMON, P;BRUNET, P
通讯作者:
BRUNET, P
影响因子:
3.2
作者:
Callebaut, Gert;Mangelinckx, Sven;De Kimpe, Norbert
通讯作者:
De Kimpe, Norbert