scholarly journals Unconjugated chiral azomethines; structure of N-isobutylidene derivatives of (S)-.ALPHA.-amino acid esters.

1978 ◽  
Vol 26 (2) ◽  
pp. 466-471 ◽  
Author(s):  
HIROSHI TAKAHASHI ◽  
HIROTAKA OTOMASU
2003 ◽  
Vol 20 (1) ◽  
pp. 17-26 ◽  
Author(s):  
Cosimo Altomare ◽  
Giuseppe Trapani ◽  
Andrea Latrofa ◽  
Mariangela Serra ◽  
Enrico Sanna ◽  
...  

1989 ◽  
Vol 37 (10) ◽  
pp. 2867-2869 ◽  
Author(s):  
Shinzo KANO ◽  
Yoko YUASA ◽  
Tsutomu YOKOMATSU ◽  
Shiroshi SHIBUYA

ChemInform ◽  
2005 ◽  
Vol 36 (23) ◽  
Author(s):  
N. N. Polygalova ◽  
A. G. Mikhailovskii

1964 ◽  
Vol 17 (11) ◽  
pp. 1282 ◽  
Author(s):  
B Halpern ◽  
LB James

The reaction of dimedone (5,5-dimethylcyclohexane-1,3-dione) with amino-acid "active" esters leads to optically pure enamine derivatives. The dimedone derivatives of amino acid esters could also be converted by way of their hydrazides to the corresponding azides. The thiophenyl ester and azide derivatives have been used directly for peptide synthesis. The protecting group can easily be removed from the N-protected peptides by means of aqueous bromine, with the formation of 2,2-dibromodimedone and the hydrobromide of the corresponding peptide ester.


1943 ◽  
Vol 65 (9) ◽  
pp. 1670-1674 ◽  
Author(s):  
Max Frankel ◽  
Ephraim Katchalski

1978 ◽  
Vol 21 (5) ◽  
pp. 448-456 ◽  
Author(s):  
Ulf Henrik Lindberg ◽  
Seth Olof Thorberg ◽  
Stefan Bengtsson ◽  
Anna L. Renyi ◽  
Svante B. Ross ◽  
...  

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