Journal of the Chemical Society, Dalton Transactions p. 1331 - 1335 (1981)
Update date:2022-08-03
Topics:
Hefford, Robert J. W.
Pettit, Leslie D.
Co-ordiantion compounds formed between L-tyrosylglycine (H2L), L-tyrosyl-L-leucine, L-tyrosyl-D-leucine, glycyltyrosine, L-leucyl-L-tyrosine, and L-tyrosineamide a H+ and Cu2+ have been studied potentiometrically at 25 deg C and l=0.10 mol dm-3 (K(NO3)).In addition to the expected complex compounds (Cu(HL))+, (CuL), (Cu(H-1L))-, and (Cu(H-2L))2-, and (Cu(HL2))-, a binuclear complex, ((Cu(H-1L))2)2-, was found to form in the pH region 8-10.5 with tyrosylglycine and tyrosyl-D/L-leucine (giving a green solution) but was absent when tyrosine was the terminal carboxyl of the dipeptide.Spectrophotometric titrations showed this dimer to involve cooper(II)-phenolate oxygen bonding.A structure for the dimer is described which explains the absence of a comparable dimer with glycyl- and leucyl-tyrosine, and the stereoselectivity found with the tyrosyl-D/L-leucine diastereomers.
View MoreContact:86 21 3772 9386
Address:Rm.1803,Starry Bldg.1,1505 Meijiabang Road,Shanghai 201620 China
SHANGHAI RC CHEMICALS CO.,LTD.
website:http://www.rcc.net.cn
Contact:+86-21-50322175
Address:Rm1415 Yinqiao Masion No.58 Jinxin Road Pudong Shanghai China
SHANDONG CREDAGRI CHEMICAL CO., LTD.
Contact:+86-531-88872050
Address:ROOM 601A, BUILDING 2, SHUNTAI SQUARE, NO. 2000 SHUNHUA ROAD, HI-TECH DEVELOPMENT ZONE, JINAN, CHINA.
Xi'an North Information Industry Co., Ltd. Weilv Chemical Department
Contact:+86-29-88156413
Address:Jixiang Road 99 Xi'an Shaanxi Province
shanghai jiuling chemical co.,ltd.
Contact:+86-21-50387295
Address:Zaozhuang Road, Pudong, Shanghai City. China
Doi:10.1002/chem.201404261
(2014)Doi:10.1021/jm00144a012
(1981)Doi:10.1021/acs.orglett.7b01242
(2017)Doi:10.1081/SCC-120001997
(2002)Doi:10.1021/op0402026
(2004)Doi:10.3184/030823409X12549096901122
(2009)
