A class of novel Schiff's bases: Synthesis, therapeutic action for chronic pain, anti-inflammation and 3D QSAR analysis.
To discover analgesics for treating chronic pain 17 novel Schiff's bases, N,N'-(Z-allylidene-1,3-diyl)bisamino acid methyl esters were prepared from 1,1,3,3,-tetramethoxypropane and amino acid methyl esters. On tail-flick mouse model 20 micromol/kg of these Schiff's bases were orally administered, the analgesic action started 30 min after administration, reached the maximum 120 min after administration, and at 180 min this action was still observed. On a xylene-induced ear edema mouse model 20 micromol/kg of these Schiff's bases exhibited desirable anti-inflammation. Thus the present Schiff's bases are able to treat chronic pain from inflammation. The effect of the side chains of the amino acid residues of these Schiff's bases on the analgesic activity was explained with 3D QSAR.
Zhou
Yinjian
Y
College of Pharmaceutical Sciences, Peking University, Beijing 100083, PR China.
Zhao
Ming
M
College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, PR China.
Wu
Yingting
Y
College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, PR China.
Li
Chunyu
C
College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, PR China.
Wu
Jianhui
J
College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, PR China.
Zheng
Meiqing
M
College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, PR China.
Peng
Li
L
College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, PR China.
Peng
Shiqi
S
College of Pharmaceutical Sciences, Peking University, Beijing 100083, PR China; College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, PR China.
D000284:Administration, Oral; D000818:Animals; D000893:Anti-Inflammatory Agents / Q000737:chemistry* / Q000145:classification / Q000627:therapeutic use*; D002908:Chronic Disease; D004195:Disease Models, Animal; D004423:Ear / Q000473:pathology; D004487:Edema / Q000139:chemically induced / Q000188:drug therapy* / Q000473:pathology; D004952:Esters / Q000138:chemical synthesis / Q000737:chemistry; D008297:Male; D051379:Mice; D008813:Mice, Inbred ICR; D008958:Models, Molecular; D015394:Molecular Structure; D010146:Pain / Q000188:drug therapy*; D021281:Quantitative Structure-Activity Relationship; D012545:Schiff Bases / Q000737:chemistry* / Q000145:classification / Q000627:therapeutic use*; D013237:Stereoisomerism; D014992:Xylenes
D000893:Anti-Inflammatory Agents; D004952:Esters; D012545:Schiff Bases; D014992:Xylenes