Diastereoselective alkylation of a newly designed bislactim ether towards the asymmetric synthesis of α-alkylated serines
摘要:
Diastereoselective alkylation of ethyl (5S)-3,6-diethoxy-2,5-dihydro-5-isopropyl-2-pyrazinecarboxylate (5S)-3 with alkyl halides was investigated by using NaH and n-BuLi. These alkylated products (2R,5S)-4b-d were converted to the corresponding alpha-alkylated serines (S)-6b-d. (C) 1998 Elsevier Science Ltd. All rights reserved.
Diastereoselective alkylation of a newly designed bislactim ether towards the asymmetric synthesis of α-alkylated serines
摘要:
Diastereoselective alkylation of ethyl (5S)-3,6-diethoxy-2,5-dihydro-5-isopropyl-2-pyrazinecarboxylate (5S)-3 with alkyl halides was investigated by using NaH and n-BuLi. These alkylated products (2R,5S)-4b-d were converted to the corresponding alpha-alkylated serines (S)-6b-d. (C) 1998 Elsevier Science Ltd. All rights reserved.