ENANTIOMERICALLY PURE b-AMINO ACIDS FROM 2-tert-BUTYL-1-CARBOMETHOXY-2,3-DIHYDRO-4(1H)-PYRIMIDINONE: (R)-3-AMINO-3-(p-METHOXYPHENYL)PROPIONIC ACID

1996 ◽  
Vol 73 ◽  
pp. 201 ◽  
2013 ◽  
Vol 66 (9) ◽  
pp. 1105 ◽  
Author(s):  
Timothy M. Altamore ◽  
Oanh T. K. Nguyen ◽  
Quentin I. Churches ◽  
Kate Cavanagh ◽  
Xuan T. T. Nguyen ◽  
...  

A concise synthesis of both E-isomers of 2S-amino-3-(2′-aminomethyl-cyclopropyl)propionic acid, new methano-l-lysines, is described. The synthetic route includes nine steps from l-methionine, with a key step involving the cyclopropanation of an intermediate E-allylic alcohol. The resultant hydroxymethylcyclopropanes were readily separated and converted into the title α-amino acids. The stereochemistry around the cyclopropane rings was deduced by conducting the cyclopropanation in the presence of N,N,N′,N′-tetramethyl-d-tartaric acid diamide butylboronate, a chiral controller which is known to favour the production of S-hydroxymethyl cyclopropanes from allylic alcohols.


1998 ◽  
pp. 659-660 ◽  
Author(s):  
Steven D. Bull ◽  
Stephen G. Davies ◽  
Simon W. Epstein ◽  
Jacqueline V. A. Ouzman

ChemInform ◽  
2000 ◽  
Vol 31 (49) ◽  
pp. no-no
Author(s):  
Dominick A. Quagliato ◽  
Patrick M. Andrae ◽  
Edward M. Matelan

Sign in / Sign up

Export Citation Format

Share Document