57584-59-5Relevant articles and documents
Carboxylic Anhydride Synthesis from γ-Benzyl-L-glutamate and Dimethyl Carbonate
Zhang, Zhao,Su, Kunmei,Li, Zhenhuan
supporting information, p. 749 - 752 (2019/01/25)
A green, environmentally friendly, and nontoxic method was developed to synthesize carboxylic anhydrides (NCAs) from γ-benzyl-l-glutamate (BLG) and dimethyl carbonate (DMC) though two steps: synthesis of N-methoxycarbonyl-γ-benzyl-l-glutamate intermediate (NOM-BLG) and cyclization. The highest yields of NOM-BLG (up to 83.7%) and NCA-BLG (up to 66.7%) were obtained. Most importantly, the use of DMC will open an innovative door to synthesize NCAs.
Studies on selectin blockers. 7. Structure-activity relationships of sialyl Lewis X mimetics based on modified ser-glu dipeptides
Tsukida, Takahiro,Moriyama, Hideki,Kurokawa, Kiriko,Achiha, Toshio,Inoue, Yoshimasa,Kondo, Hirosato
, p. 4279 - 4287 (2007/10/03)
We have previously found that heterochiral fucodipeptides, L-Ser-D-Glu (3a) and D-Ser-L-Glu (3b), exhibited up to 20-100 times more potency than a sialyl Lewis X (sLe(X), 1) and a 3'sulfated Lewis X analogue (2) toward E- selectin binding and have also proposed, from molecular dynamics calculation, that their strong activities would depend on a possible formation of the type II and/or type II' β-turn of compounds 3a,b (Tsukida, T.; Hiramatsu, Y.; Tsujishita, H.; Kiyoi, T.; Yoshida, M.; Kurokawa, K.; Moriyama, H.; Ohmoto, H.; Wada, Y.; Saito, T.; Kondo, H. J. Med. Chem. 1997, 40, 3534-3541). To clarify our hypothesis, we synthesized several analogues of compounds 3a,b and investigated their structure-activity relationships. As a result, it was indicated that the type II and/or type II' β-turn conformation would be a comparatively tight form and would play important roles in favorable binding to E-selectin. These findings indicate that sLe(X) mimetics with type II and type II' β-turn dipeptides could be a useful methodology for the design of an active selectin blocker.