Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Susan M, Chemaly"'
Autor:
Susan M. Chemaly
Publikováno v:
South African Journal of Science, Vol 112, Iss 9/10, Pp 9-9 (2016)
Adenosylcobalamin (AdoCbl), or coenzyme B12, is a cofactor for enzymes important in metabolism in humans (and other mammals) and bacteria. AdoCbl contains a Co-C bond and is extremely light sensitive, but, until recently, this light sensitivity appea
Externí odkaz:
https://doaj.org/article/dd0871d190d64bdab07ca0d962c53daf
Autor:
Monika Nowakowska, Susan M. Chemaly, Amanda L. Rousseau, Pradeep R. Varadwaj, Arpita Varadwaj, Penny Poomani Govender, Helder M. Marques, Koichi Yamashita
Publikováno v:
Inorganica Chimica Acta. 484:402-413
The substitution of H2O in aquacyano-5,6-dioxo-5,6-seco-heptamethyl-cob(III)yrinate, (aquacyano-5-seco-cobester, [AC-5-seco-Cbs]+), in which the C5–C6 bond of the corrin ring of this vitamin B12 derivative is cleaved, by a variety of anionic ligand
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e990a9076767c31c2f9addf77906f20
https://doi.org/10.1016/j.ica.2018.09.073
https://doi.org/10.1016/j.ica.2018.09.073
Autor:
Susan M. Chemaly
Publikováno v:
Polyhedron. 175:114203
The structures of the diastereomers of aquacyanocobinamide and aquacyanocobester were determined by 2-dimensional NMR and comparison with the known X-ray crystal structure of α-cyano-β-aqua-cobyric acid (COBYIC). The α-CN− ligand of α-cyano-β-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65b701d252daa5b0435b6d314b84cc6f
https://doi.org/10.1016/j.poly.2019.114203
https://doi.org/10.1016/j.poly.2019.114203
Autor:
Susan M. Chemaly
Publikováno v:
Polyhedron. 174:114162
Despite many attempts over more than sixty years, it has not been possible to produce single crystals of any cobalt cobinamides to determine their structure by X-ray crystallography. This paper describes the use of 13C and 1H NMR and comparison with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f80c8a224502ac7763d25e32440ec2c
https://doi.org/10.1016/j.poly.2019.114162
https://doi.org/10.1016/j.poly.2019.114162
Autor:
Susan M. Chemaly, Louise Kendall, Helder M. Marques, Christopher B. Perry, Monika Nowakowska, Dale Pon
Publikováno v:
Inorganic Chemistry. 52:1077-1083
Equilibrium constants (log K) for substitution of coordinated H(2)O in aquacyanocobyrinic acid heptamethyl ester (aquacyanocobester, ACCbs) and aquacyano-stable yellow cobyrinic acid hexamethyl ester (aquacyano-stable yellow cobester, ACSYCbs), in wh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::afec23ca6498a8484868f0e8458b3daa
https://doi.org/10.1021/ic302386u
https://doi.org/10.1021/ic302386u
Autor:
Kenneth L. Brown, Helder M. Marques, Craig D. Grimmer, Susan M. Chemaly, Orde Q. Munro, Manuel A. Fernandes
Publikováno v:
Inorganic Chemistry. 50:8700-8718
A stable yellow derivative of cobyrinic acid heptamethyl ester, (5R,6R)-Coα,Coβ-dicyano-5,6-dihydro-5-hydroxy-heptamethylcob(III)yrinate-c,6-lactone (DCSYCbs), was prepared from dicyanocobyrinic acid heptamethyl ester (DCCbs). The C5 carbon is oxid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6789a930e035c791b1f3017c60fe447f
https://doi.org/10.1021/ic200285k
https://doi.org/10.1021/ic200285k
Publikováno v:
Journal of Inorganic Biochemistry. 101:764-773
The acquisition of resistance by malaria parasites towards existing antimalarials has necessitated the development of new chemotherapeutic agents. The effect of vitamin B(12) derivatives on the formation of beta-haematin (synthetic haemozoin) was det
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d48703aab4ce812aa39ae995c3921eeb
https://doi.org/10.1016/j.jinorgbio.2007.01.006
https://doi.org/10.1016/j.jinorgbio.2007.01.006
Publikováno v:
Inorganic chemistry. 50(18)
Equilibrium constants (log K) for the substitution of coordinated H(2)O in aquacyanocobyrinic acid heptamethyl ester (aquacyanocobester, ACCbs) and stable yellow aquacyanocobyrinic acid heptamethyl ester (stable yellow aquacyanocobester, ACSYCbs), in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3c117af036738d0db694f74be44c7d4
https://pubmed.ncbi.nlm.nih.gov/21851068
https://pubmed.ncbi.nlm.nih.gov/21851068
Autor:
Susan M. Chemaly
Publikováno v:
Journal of Inorganic Biochemistry. 44:1-15
The cobalamins with P(OCH3)3, P(OCH2CH3)3, P(OCH2CH3)2O−, and P[OCH(CH3)2]2O− as ligands have been prepared and characterized. It is proposed that charge-transfer bands are present in the near UV region of the UV-visible spectra of vitamin B12 co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eaae932dc46e9bf2decad19249ec4752
https://doi.org/10.1016/0162-0134(91)80056-n
https://doi.org/10.1016/0162-0134(91)80056-n
Autor:
Susan M. Chemaly
Publikováno v:
Journal of Inorganic Biochemistry. 44:17-25
The equilibrium constants for the substitution of coordinated H2O in aquocobalamin by P(OCH3)3 and P(OCH2CH3)3 have been determined. The decrease in equilibrium constants P(OCH2)3CCH2CH3> P(OCH3)3 = P(OCH2CH3)3 is ascribed to the smaller steric size
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e2b489906ca3f23f9af79a0ab57eca3
https://doi.org/10.1016/0162-0134(91)80057-o
https://doi.org/10.1016/0162-0134(91)80057-o