Synthesis of chiral n-protected α-amino-β-diketones from α-diazoketones derived from natural amino acids
摘要:
Alpha-Diazoketols, prepared by condensation of aldehydes or ketones with lithiated optically active alpha-diazoketones derived from natural amino acids, rearrange to homochiral alpha-amino-beat-diketones on treatment with rhodium(II) acetate.
Catalyzed reactions of α-amino diazoketones with allyl sulfides: a new synthetic protocol for α-amino homoallyl ketones en route to 3-piperidinol alkaloids
作者:Saumitra Sengupta、Somnath Mondal
DOI:10.1016/s0040-4039(00)00282-3
日期:2000.4
Cu(acac)2-catalyzed reactions of enantiopure α-amino diazoketones with allyl sulfides provide a facile synthetic route to α-amino homoallyl ketones via 2,3-sigmatropic rearrangements of the derived allyl sulfonium ylides.
γ-Amino-β-ketosulfones as chiral educts: A facile synthesis of enantiopure α-amino ketones
作者:Saumitra Sengupta、Debarati Sen Sarma、Somnath Mondal
DOI:10.1016/s0040-4020(98)00533-x
日期:1998.8
Starting from 'chiral-pool' derived gamma-amino-beta-ketosulfones, a facile synthesis of enantiopure alpha-amino ketones has been developed via an alpha-alkylation-desulfonation sequence. Extension of this methodology to enantiopure a-acetoxy ketone synthesis,however, have met with limited success. (C) 1998 Elsevier Science Ltd. All rights reserved.
A facile synthesis of Enantiopure γ-Amino-And γ-Hydroxy-β-Ketosulfones
Enantiopure gamma-amino and gamma-hydroxy-beta-ketosulfones have been synthesized in high yields from alpha-diazoketones derived from the alpha-amino and alpha-hydroxy acid chiral pools.
COLLINS, JEREMIAH C.;DILWORTH, BRID M.;GARVEY, NORAH T.;KENNEDY, MICHAEL;+, J. CHEM. SOC. CHEM. COMMUN.,(1990) N, C. 362-364