@article {5201,
	title = {Proton- and lanthanide-coordinating properties of the tetraaza macrocycle (EDDA-KA)(2) in aqueous solution},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {79},
	number = {5-6},
	year = {2001},
	note = {ISI Document Delivery No.: 456EVTimes Cited: 4Cited Reference Count: 36},
	month = {May},
	pages = {1058-1067},
	type = {Article},
	abstract = {{The new potentially multidentate ligand (EDDA-KA)(2) has been prepared and its acid-base properties determined. Its coordination properties with three lanthanide ions (La3+, Gd3+, and Lu3+) and Fe3+ have been studied in aqueous solution (I = 0.16 M NaCl, 25degreesC) by potentiometric pH, spectrophotometric, and H-1 NMR titrations. In total, eight pK(a) values could be determined by these diverse methods. From the H-1 NMR titrations, all the deprotonation steps could be determined and assigned (in groups). Strong hydrogen bonding among two nitrogen atoms and one oxygen atom on the pyrone ring was observed, and the corresponding pK(a) values were estimated to be 13.2 and 14.0. By comparison with similar systems, an equilibrium constant for the formation of the hydrogen bond was estimated},
	keywords = {ACID-BASE, acidity constants, ALKALINE-EARTH, amino, BINDING-PROPERTIES, carboxylate chelator, CHEMISTRY, CONTRAST AGENTS, DERIVATIVES, DYNAMICS, Fe3+, GADOLINIUM, Gd3+, La3+, Lu3+, METAL-COMPLEXES, STABILITIES, stability constants},
	isbn = {0008-4042},
	url = {<Go to ISI>://000170070900078},
	author = {Song, B. and Kurokawa, G. S. and Liu, S. and Orvig, Chris}
}
@article {5150,
	title = {Sugar-pendant diamines},
	journal = {Journal of Organic Chemistry},
	volume = {66},
	number = {11},
	year = {2001},
	note = {ISI Document Delivery No.: 435ZDTimes Cited: 19Cited Reference Count: 62},
	month = {Jun},
	pages = {3783-3789},
	type = {Article},
	abstract = {A set of 1,3-propanediamine derivatives connected to carbohydrates (5) has been prepared in four steps from peracetylated sugar and 1,3-dibromo-2-propanol in 60-73\% yields. D-Glucose, D-mannose, D-galactose, D-xylose, D-ribose, and maltose are utilized as sugar molecules in this work. The diamine moiety was connected to the C1 carbon of the glycopyranose ring via an O-glycoside bond. All of the anomeric configurations and sugar puckering conformations, except in the D-maltose derivative, were determined by X-ray crystallography of the diazido or dibromo precursors. While glycosidation of peracetylated galactopyranose with 1,3-dibromo-2-propanol in the presence of boron trifluoride afforded both anomers, the neighboring group participation of the 2-acetoxy group yielded a single anomer for the other substrates. This method has been used to synthesize a library of sugar-pendant diamines including an OH-protected derivative (6), and an N,N {\textquoteright} -diisopropyl-substituted derivative (7). A similar series of reactions using 2,3-dibromo-1-propanol gave ethylenediamine-type derivatives (11), and bis(bromomethyl)bis(hydroxymethyl)methane (12) gave bisglucose-pendant derivatives (16).},
	keywords = {BINDING-PROPERTIES, C-2 EPIMERIZATION, CARBON SKELETON, D-GLUCOSE, ETHYLENEDIAMINE, LIGANDS, N-GLYCOSIDES, NICKEL(II) COMPLEXES, PHOTOCYTOTOXICITY, WATER},
	isbn = {0022-3263},
	url = {<Go to ISI>://000168911300018},
	author = {Mikata, Y. and Shinohara, Y. and Yoneda, K. and Nakamura, Y. and Esaki, K. and Tanahashi, M. and Brudzinska, I. and Hirohara, S. and Yokoyama, M. and Mogami, K. and Tanase, T. and Kitayama, T. and Takashiba, K. and Nabeshima, K. and Takagi, R. and Takatani, M. and Okamoto, T. and Kinoshita, I. and Doe, M. and Hamazawa, A. and Morita, M. and Nishida, F. and Sakakibara, T. and Orvig, Chris and Yano, S.}
}
@article {4874,
	title = {Template effects in the formation of a tetramethylene-bridged hemicarceplex},
	journal = {Journal of the American Chemical Society},
	volume = {122},
	number = {7},
	year = {2000},
	note = {ISI Document Delivery No.: 289TZTimes Cited: 20Cited Reference Count: 57},
	month = {Feb},
	pages = {1337-1342},
	type = {Article},
	abstract = {We report a study of the template effect in the formation of tetramethylene-bridged hemicarceplex 7.guest. Two tetrol cavitands were bridged with 1,4-dibromobutane in the presence of suitable template (guest) molecules in N-formylpiperidine as solvent. Selectivity was observed when competing templates were present during the reaction: the relative templating abilities (template ratios) of 30 different guest molecules range by 3600-fold, and manifest a significant preference for para-disubstituted benzenes. Twenty-one of the 30 hemicarceplexes used in this templation study are new. The trend in guest selectivity is markedly different from previous studies in which smaller cavities (e.g., carceplex 2.guest) are formed. In such studies, capsule 3.guest was a good transition state model, whereas this is not the case in the present work.},
	keywords = {2 BOWLS, BINDING-PROPERTIES, CARCEPLEXES, CONTAINER, CRYSTAL-STRUCTURE, ENCAPSULATION, METAL-ION, O-BENZYNE, REVERSIBLE MOLECULAR CAPSULES, zeolites},
	isbn = {0002-7863},
	url = {<Go to ISI>://000085639200011},
	author = {Makeiff, D. A. and Pope, D. J. and Sherman, J. C.}
}
