23953-00-6Relevant articles and documents
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El-Abadelah,M.M.
, p. 589 - 591 (1973)
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Hydrophilic Oligo(lactic acid)s Captured by a Hydrophobic Polyaromatic Cavity in Water
Kusaba, Shunsuke,Yamashina, Masahiro,Akita, Munetaka,Kikuchi, Takashi,Yoshizawa, Michito
supporting information, p. 3706 - 3710 (2018/03/05)
Biologically relevant hydrophilic molecules rarely interact with hydrophobic compounds and surfaces in water owing to effective hydration. Nevertheless, herein we report that the hydrophobic cavity of a polyaromatic capsule, formed through coordination-driven self-assembly, can encapsulate hydrophilic oligo(lactic acid)s in water with relatively high binding constants (up to Ka=3×105 m?1). X-ray crystallographic and ITC analyses revealed that the unusual host–guest behavior is caused by enthalpic stabilization through multiple CH–π and hydrogen-bonding interactions. The polyaromatic cavity stabilizes hydrolyzable cyclic di(lactic acid) and captures tetra(lactic acid) preferentially from a mixture of oligo(lactic acid)s even in water.
Syntheses of isotopically labelled L-?±-amino acids with an asymmetric centre at C-3
Harding, John R.,Hughes, Rachael A.,Kelly, Nicholas M.,Sutherland, Andrew,Willis, Christine L.
, p. 3406 - 3416 (2007/10/03)
Approaches are described to the synthesis of a series of isotopically labelled L-a-amino acids each with an asymmetric centre at C-3, including isoleucine, allo-isoleucine, threonine and allo-threonine. The methods may be simply adapted for the selective incorporation of an isotopic label at each site of L-valine including the selective labelling of either diastereotopic methyl group with carbon-13 and/or deuterium and labelling of the amine with nitrogen-15. ? The Royal Society of Chemistry 2000.
