Adenine-Amino Acid Interactions Studied by Charge-Transfer Chromatography

1988 ◽  
Vol 11 (15) ◽  
pp. 3067-3078 ◽  
Author(s):  
Tibor Cserháti ◽  
Maria Szõgyi
Keyword(s):  
Synlett ◽  
2020 ◽  
Author(s):  
Xiaohua Liu ◽  
Yi Li ◽  
Hao Pan ◽  
Wang-Yuren Li ◽  
Xiaoming Feng

AbstractAn asymmetric organocatalytic nucleophilic aromatic substitution reaction of azlactones with electron-deficient aryls was established. A variety of α-aryl α-alkyl α-amino acid esters and peptides were obtained in decent yields and stereoselectivities. A new bifunctional catalytic mode involving charge-transfer interaction and hydrogen bonding is proposed to explain the enantioselectivity.


Small ◽  
2017 ◽  
Vol 13 (22) ◽  
pp. 1604305 ◽  
Author(s):  
Yen-Chen Shih ◽  
Yu-Bing Lan ◽  
Chia-Shuo Li ◽  
Hsiao-Chi Hsieh ◽  
Leeyih Wang ◽  
...  

1986 ◽  
Vol 39 (9) ◽  
pp. 1435 ◽  
Author(s):  
BH Robinson ◽  
J Simpson ◽  
ME Trounson

The complexes FcNHC (O)CCo3(CO)9 ( Fc = ferrocenyl ) (3) and Fc ( alaOMe )C(O)CCo3(CO)9 (ala = alanine ) (5) have been synthesized from the +C(O)CCo3(CO)9 cation and FcNH2 or Fc ( alaOMe )H respectively. Derivatives FcNHC (O)CCo3(CO)6[P( OPh )3]3 (4) and Fc ( alaOMe )C(O)CCo3(CO)6[P( OPh )3]3 (6) are also described. Analysis of the spectroscopic and redox behaviour shows that the amide linkage acts as a -I, -M substituent group to Fc and the Co3C unit acts as a-I, +M group. Unlike complexes where these redox centres are directly linked, electronic effects are not transmitted between Co3C and Fc . Oxidation at the ferrocene centre and reduction at the Co3C centre in (3) and (5) is chemically reversible whereas oxidation of the amino acid moiety is irreversible; oxidation of the cluster takes place in (4) and (6) but no intervalence charge transfer is observed.


1974 ◽  
Vol 57 (8) ◽  
pp. 2503-2514 ◽  
Author(s):  
Jan W. Verhoeven ◽  
Anne-Marie A. Verhoeven-Schoff ◽  
Andr� Masson ◽  
Robert Schwyzer

2016 ◽  
Vol 222 ◽  
pp. 1061-1067 ◽  
Author(s):  
K.R. Mahmoud ◽  
Moamen S. Refat ◽  
T. Sharshar ◽  
Abdel Majid A. Adam ◽  
El-Sayed A. Manaaa

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