Inhibition of Trypanothione Reductase by Substrate Analogues
摘要:
[GRAPHICS]Trypanothione reductase (TR) catalyzes the NAPDH-dependent reduction of the spermidine-glutathione conjugate trypanothione, an antioxidant found in Trypanosomatid parasites. TR plays an essential role in the parasite's defense against oxidative stress and has emerged as a prime target for drug development. Here we report the synthesis of several trypanothione analogues and their inhibitory effects on T. cruzi TR. All are competitive inhibitors with K-i values ranging from 30 to 91 muM.
Inhibition of Trypanothione Reductase by Substrate Analogues
摘要:
[GRAPHICS]Trypanothione reductase (TR) catalyzes the NAPDH-dependent reduction of the spermidine-glutathione conjugate trypanothione, an antioxidant found in Trypanosomatid parasites. TR plays an essential role in the parasite's defense against oxidative stress and has emerged as a prime target for drug development. Here we report the synthesis of several trypanothione analogues and their inhibitory effects on T. cruzi TR. All are competitive inhibitors with K-i values ranging from 30 to 91 muM.
Asymmetric synthesis of unsaturated and bis-hydroxylated (S,S)-2,7-Diaminosuberic acid derivatives
作者:Peter Kremminger、Kjell Undheim
DOI:10.1016/s0040-4020(97)00393-1
日期:1997.5
Stereoselective syntheses of cystine substitutes with all-carbon C4-bridges are described. The disulfide unit between the two alanine moieties in cystine has been replaced by a C2-unit. When the C2-unit is olefinic, conformationally constrained cis- and trans-unsaturated analogues result. Vicinal dihydroxy analogues were formed when the C2-unit was a vicinal 1,2-ethylenediol derivative. N-Fmoc protection
DOUBLE CHAIN PEPTIDE COMPOUNDS HAVING HEMOREGULATORY ACTIVITY
申请人:Hafslund Nycomed AS
公开号:EP0673388A1
公开(公告)日:1995-09-27
US5610141A
申请人:——
公开号:US5610141A
公开(公告)日:1997-03-11
[EN] DOUBLE CHAIN PEPTIDE COMPOUNDS HAVING HEMOREGULATORY ACTIVITY<br/>[FR] COMPOSES PEPTIDIQUES A DOUBLE CHAINE PRESENTANT UNE ACTIVITE HEMOREGULATRICE
申请人:HAFSLUND NYCOMED AS
公开号:WO1993024523A1
公开(公告)日:1993-12-09
(EN) There is disclosed dipeptide compounds, the two peptide chains being joined together at a C$g(a)-atom of a non-terminal amino acid by a divalent bridging group -A-. The C$g(a)-atoms joined to group -A- are located in equivalent positions in each peptide chain and each lack their native $g(a)-side chain. Group -A- is as defined in claim 1. The bridged dipeptide compounds disclosed have a stimulating activity on cell division, especially for myelopoietic and bone marrow cells.(FR) On décrit des composés dipeptidiques dont les deux chaînes peptidiques se rejoignent à un atome C$g(a) d'un acide aminé non terminal grâce à un groupe -A- de pontage qui est bivalent. Les atomes C$g(a) rattachés à ce groupe -A- sont placés en des positions équivalentes dans chaque chaîne peptidique qui est dépourvue de son côté $g(a) naturel. Le groupe -A- est conforme à la définition figurant dans la première revendication. Les composés dipeptidiques pontés qui sont décrits présentent une activité stimulante pour la division cellulaire et notamment en ce qui concenre les cellules myélopoïétiques et celles de la m÷lle osseuse.