Penicillin Acylase-Mediated Synthesis of 2-Acetyl-1-pyrroline and of 2-Propionyl-1-pyrroline, Key Roast-Smelling Odorants in Food. Inclusion Complexes with β-Cyclodextrin and Their NMR and MS Characterization
作者:Tito Fabrizio Favino、Giovanni Fronza、Claudio Fuganti、Daniela Fuganti、Piero Grasselli、Andrea Mele
DOI:10.1021/jo961474c
日期:1996.1.1
The synthesis of the strong natural roast odorants 1 and 2 is achieved from the C-6 isomeric alcohols 16 and 21 via the acetylenic C-6 and C-7 amines 8 and 9. Key step in the process is the hydrolysis of the N-phenylacetamides 12 and 13 by means of immobilized penicillin acylase, which affords the 1-amino-4,5-diketones 14 and 15, spontaneously ring closing to 1 and 2. These latter compounds form inclusion
由C-6异构醇16和21经由炔属C-6和C-7胺8和9合成强天然焙烤香精1和2。该过程中的关键步骤是N-的水解苯乙酰胺12和13通过固定化的青霉素酰基转移酶,产生1-氨基-4,5-二酮14和15,自发接近1和2。如NMR所示,后两种化合物与β-环糊精形成包合物。在氘水和FAB-MS光谱中进行测量。