The aza-Diels–Alder reaction protocol—a useful approach to chiral, sterically constrained α-amino acid derivatives
摘要:
Different types of polycyclic alpha -amino acid derivatives are prepared from chiral imines by using well-established aza-Diels-Alder reaction conditions. Simply by varying the diene moiety, different products such as spirocyclic compounds 8 and 9, anthracene 10, and tetrahydroquinolines 15-21 are formed. (C) 2001 Elsevier Science Ltd. All rights reserved.
The aza-Diels–Alder reaction protocol—a useful approach to chiral, sterically constrained α-amino acid derivatives
作者:Sophie K Bertilsson、Jenny K Ekegren、Stefan A Modin、Pher G Andersson
DOI:10.1016/s0040-4020(01)00531-2
日期:2001.7
Different types of polycyclic alpha -amino acid derivatives are prepared from chiral imines by using well-established aza-Diels-Alder reaction conditions. Simply by varying the diene moiety, different products such as spirocyclic compounds 8 and 9, anthracene 10, and tetrahydroquinolines 15-21 are formed. (C) 2001 Elsevier Science Ltd. All rights reserved.
Diastereoselective imino ester cycloadditions. Enantioselective synthesis of azabicyclo[2.2.1]heptenes
作者:Peter Hamley、G�nter Helmchen、Andrew B. Holmes、David R. Marshall、John W. M. MacKinnon、David F. Smith、Joseph W. Ziller
DOI:10.1039/c39920000786
日期:——
The diethylaluminium chloride-catalysed cycloaddition of cyclopentadiene to the (S)-lactate-derived N-toluene-p-sulfonyliminoacetate 5 gives mainly (76% diastereoisomeric excess, d.e.) the adduct 9(X-ray structure); the (R)-pantolactone-derived iminoacetate 6 similarly gives (70% d.e.) the adduct 8 which is correlated via the methyl esters 11 with compound 9.