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Volumn 48, Issue 8, 2009, Pages 1417-1421

A copper-catalyzed, pH-neutral construction of high-enantiopurity peptidyl ketones from peptidic S-acylthiosalicylamides in air at room temperature

Author keywords

Copper; Cross coupling; Peptidomimetics; Protein modifications; Synthetic methods

Indexed keywords

ESTERIFICATION; ESTERS; FOURIER TRANSFORMS; KETONES; ORGANIC COMPOUNDS; SULFUR;

EID: 60149110162     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.200804524     Document Type: Article
Times cited : (58)

References (97)
  • 47
    • 60149085614 scopus 로고    scopus 로고
    • The construction of enantiopure peptidyl ketones starting from naturally occurring amino acids is known. Although powerful, none of the known reactions take place under nonbasic (nonepimerizing) reaction conditions, nor are they general with respect to functional group compatibility, see: references [44-60
    • The construction of enantiopure peptidyl ketones starting from naturally occurring amino acids is known. Although powerful, none of the known reactions take place under nonbasic (nonepimerizing) reaction conditions, nor are they general with respect to functional group compatibility, see: references [44-60].
  • 79
    • 33846850351 scopus 로고    scopus 로고
    • The synthesis of peptidyl ketones from thiol esters and boronic acids using palladium catalysts and stoichiometric amounts of CuI/ carboxylate cofactors (first-generation desulfitative coupling) provides improved functional group compatibility relative to organolithium, magnesium, and -zinc reagents. The desulfi- tative coupling reaction occurs at neutral pH at or near ambient temperature and has proven valuable for the synthesis of peptidyl ketones. Two new pH-neutral first-generation protocols have been disclosed, the first is through boronic acids (a) H. Yang, H. Li, R. Wittenberg, M. Egi, W. Huang, L. S. Liebeskind, J. Am. Chem. Soc. 2007, 129, 1132;
    • I/ carboxylate cofactors ("first-generation" desulfitative coupling) provides improved functional group compatibility relative to organolithium, -magnesium, and -zinc reagents. The desulfi- tative coupling reaction occurs at neutral pH at or near ambient temperature and has proven valuable for the synthesis of peptidyl ketones. Two new pH-neutral first-generation protocols have been disclosed, the first is through boronic acids (a) H. Yang, H. Li, R. Wittenberg, M. Egi, W. Huang, L. S. Liebeskind, J. Am. Chem. Soc. 2007, 129, 1132;
  • 80
    • 34547944244 scopus 로고    scopus 로고
    • H. Yang, L. S. Liebeskind, Org. Lett. 2007, 9, 2993 and a highly effective and general variant of that chemistry in which organostannanes rather than boronic acids are the reaction partners (c) H. Li, H. Yang, L. S. Liebeskind, Org. Lett. 2008, 10, 4375).
    • b) H. Yang, L. S. Liebeskind, Org. Lett. 2007, 9, 2993) and a highly effective and general variant of that chemistry in which organostannanes rather than boronic acids are the reaction partners (c) H. Li, H. Yang, L. S. Liebeskind, Org. Lett. 2008, 10, 4375).
  • 81
    • 60149107732 scopus 로고    scopus 로고
    • Simple HPLC analysis was used for the control experiments probing the influence of additives. For the added amines, benzoic acid, and glucose, the HPLC traces only showed the peaks corresponding to the formation of products and full disappearance of the peaks corresponding to the thiol ester starting material
    • Simple HPLC analysis was used for the control experiments probing the influence of additives. For the added amines, benzoic acid, and glucose, the HPLC traces only showed the peaks corresponding to the formation of products and full disappearance of the peaks corresponding to the thiol ester starting material.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.