Reported here is an efficient procedure for enantio- and diastereoselective synthesis of purr beta -amino acids that display a tert-hydroxyl functionality in the alpha -position. Key steps include a catalytic asymmetric aldol reaction and a modified Curtius rearrangement to form oxazolidinone intermediates, which are chemoselectively opened to furnish N-protected alpha -hydroxy-alpha -methyl-beta -amino acids. A modified work-up procedure of the: aldol reaction allows for recovery of up to 90% of bisoxazolinyl ligands from the catalysts. (C) 2001 Elsevier Science Ltd. All rights reserved.
机构:
Henan Univ, Key Lab Nat Med & Immunoengn Henan Prov, Kaifeng 475004, Henan, Peoples R ChinaHenan Univ, Key Lab Nat Med & Immunoengn Henan Prov, Kaifeng 475004, Henan, Peoples R China
Yang, Wenguo
Wei, Xinle
论文数: 0引用数: 0
h-index: 0
机构:
Henan Univ, Key Lab Nat Med & Immunoengn Henan Prov, Kaifeng 475004, Henan, Peoples R ChinaHenan Univ, Key Lab Nat Med & Immunoengn Henan Prov, Kaifeng 475004, Henan, Peoples R China
Wei, Xinle
Pan, Yuanhang
论文数: 0引用数: 0
h-index: 0
机构:
Natl Univ Singapore, Dept Chem, Singapore 117543, SingaporeHenan Univ, Key Lab Nat Med & Immunoengn Henan Prov, Kaifeng 475004, Henan, Peoples R China
Pan, Yuanhang
Lee, Richmond
论文数: 0引用数: 0
h-index: 0
机构:
King Abdullah Univ Sci & Technolog, KAUST Catalysis Ctr, Thuwal 239556900, Saudi Arabia
King Abdullah Univ Sci & Technolog, Div Chem & Life Sci & Engn, Thuwal 239556900, Saudi ArabiaHenan Univ, Key Lab Nat Med & Immunoengn Henan Prov, Kaifeng 475004, Henan, Peoples R China
Lee, Richmond
Zhu, Bo
论文数: 0引用数: 0
h-index: 0
机构:
Henan Univ, Key Lab Nat Med & Immunoengn Henan Prov, Kaifeng 475004, Henan, Peoples R ChinaHenan Univ, Key Lab Nat Med & Immunoengn Henan Prov, Kaifeng 475004, Henan, Peoples R China
Zhu, Bo
Liu, Hongjun
论文数: 0引用数: 0
h-index: 0
机构:
Natl Univ Singapore, Dept Chem, Singapore 117543, SingaporeHenan Univ, Key Lab Nat Med & Immunoengn Henan Prov, Kaifeng 475004, Henan, Peoples R China
Liu, Hongjun
Yan, Lin
论文数: 0引用数: 0
h-index: 0
机构:
Henan Univ, Key Lab Nat Med & Immunoengn Henan Prov, Kaifeng 475004, Henan, Peoples R ChinaHenan Univ, Key Lab Nat Med & Immunoengn Henan Prov, Kaifeng 475004, Henan, Peoples R China
Yan, Lin
Huang, Kuo-Wei
论文数: 0引用数: 0
h-index: 0
机构:
King Abdullah Univ Sci & Technolog, KAUST Catalysis Ctr, Thuwal 239556900, Saudi Arabia
King Abdullah Univ Sci & Technolog, Div Chem & Life Sci & Engn, Thuwal 239556900, Saudi ArabiaHenan Univ, Key Lab Nat Med & Immunoengn Henan Prov, Kaifeng 475004, Henan, Peoples R China
Huang, Kuo-Wei
Jiang, Zhiyong
论文数: 0引用数: 0
h-index: 0
机构:
Henan Univ, Key Lab Nat Med & Immunoengn Henan Prov, Kaifeng 475004, Henan, Peoples R ChinaHenan Univ, Key Lab Nat Med & Immunoengn Henan Prov, Kaifeng 475004, Henan, Peoples R China
Jiang, Zhiyong
Tan, Choon-Hong
论文数: 0引用数: 0
h-index: 0
机构:
Henan Univ, Key Lab Nat Med & Immunoengn Henan Prov, Kaifeng 475004, Henan, Peoples R China
Natl Univ Singapore, Dept Chem, Singapore 117543, SingaporeHenan Univ, Key Lab Nat Med & Immunoengn Henan Prov, Kaifeng 475004, Henan, Peoples R China
机构:
Osaka City Univ, Grad Sch Sci, Dept Mat Sci, Sumiyoshi Ku, Osaka 5588585, JapanOsaka City Univ, Grad Sch Sci, Dept Mat Sci, Sumiyoshi Ku, Osaka 5588585, Japan
Ohfune, Y
Shinada, T
论文数: 0引用数: 0
h-index: 0
机构:
Osaka City Univ, Grad Sch Sci, Dept Mat Sci, Sumiyoshi Ku, Osaka 5588585, JapanOsaka City Univ, Grad Sch Sci, Dept Mat Sci, Sumiyoshi Ku, Osaka 5588585, Japan