26849-62-7Relevant academic research and scientific papers
Derivative of hyaluronic acid modified with amino-carboxylic acid
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, (2016/02/12)
The present invention provides a hyaluronic acid derivative comprising disaccharide units of Formula (I), and a hyaluronic acid derivative/drug conjugate wherein one or more drugs are conjugated to the hyaluronic acid derivative.
Synthesis of oxazolidin-2-ones and imidazolidin-2-ones directly from 1,3-diols or 3-amino alcohols using iodobenzene dichloride and sodium azide
He, Tian,Gao, Wen-Chao,Wang, Wei-Kun,Zhang, Chi
, p. 1113 - 1118 (2014/04/03)
A general and efficient method for the synthesis of oxazolidin-2-ones and imidazolidin-2-ones directly from 1,3-diols and 3-amino alcohols has been developed using the same reagent combination of iodobenzene dichloride (PhICl2) and sodium azide (NaN3).
Regio- and stereoselective reactions between cyclic Baylis-Hillman type adducts and N-nucleophiles and P-nucleophile
Krawczyk, Ewa,Owsianik, Krzysztof,Skowrońska, Aleksandra
, p. 1449 - 1457 (2007/10/03)
New important organic compounds multifunctionalized cyclic 6-membered and 7-membered allylic amines, azide and phosphonates have been obtained via regio- and diastereoselective reactions of cyclic Baylis-Hillman type adducts 1 with N-nucleophiles and P-nu
Stereoselective reduction of enantiopure β-enamino esters by hydride: A convenient synthesis of both enantiopure β-amino esters
Cimarelli, Cristina,Palmieri, Gianni
, p. 5557 - 5563 (2007/10/03)
The reduction of enantiopure β-enamino esters 1 with sodium triacetoxyborohydride in acetic acid is described. This occurs with good diastereo- and enantioselectivity to yield β-amino esters 2 and 3 (after hydrogenolysis of the N-chiral group). A model is
Diastereo and Enantioselective Entry to β-Amino Esters by Hydride Reduction of Homochiral β-Enamino Esters.
Cimarelli, Cristina,Palmieri, Gianni,Bartoli, Giuseppe
, p. 1455 - 1458 (2007/10/02)
The reduction of homochiral β-enamino esters 1 with sodium triacetoxyborohydride, which occurs with good diastereo- and enantioselectivity in the β-amino esters 2, is described.The procedure allows a straightforward preparation of compounds with known bio
EXPERIMENTAL STUDIES OF THE ANOMERIC EFFECT. PART 2 RING INVERSION AND NITROGEN INVERSION EQUILIBRIA IN CIS-DECAHYDROQUINAZOLINES
Booth, Harold,Khedhair, Khedhair A.,Al-Shirayda, Hatif A. R. Y.
, p. 1465 - 1476 (2007/10/02)
The positions of conformational equilibria due to the double ring inversion in cis-decahydroquinazoline (7-->//07-->8 1.08 kcal mol-1; -ΔG09-->10 1.10 kcal mol-1) for the conformation which would allow the lone pairs on N(1) and N(3) to lie on the hindered 'inside' face of the molecules.However, the values of 3J(CHNH) coupling constants for both cis-decahydro-3-methylquinazoline (10) and cis (4aH, 8aH) cis (2H, 8aH)-decahydro-2,3-dimethylquinazoline (14) show that the N-inversion equilibrium at N(1) prefers the conformation in which N(1)-H is 'inside' (axial), and N(1)-lone pair equatorial, thus demonstrating the ability of the anomeric effect to outweigh steric repulsions.
