(E)-6,8-Di­chloro-3-{[(naphthalen-1-ylmeth­yl)iminiumyl]meth­yl}-2H-chromen-4-olate

(E)-3-{[([1,1′-Biphen­yl]-3-ylmeth­yl)iminium­yl]meth­yl}-6,8-di­chloro-2H-chromen-4-olate

In the crystal of the title compound, C23H17Cl2NO2, the H atom of the -OH group is transferred to the N atom of the imine, forming a zwitterion. This results in a six-membered intra-molecular O⋯H-N hydrogen-bonded ring, rather than that formed with an O-H⋯N hydrogen bond. The dihedral angle between the rings of the biphenyl unit is 13.88 (10)°. In the crystal, mol-ecules are linked by N-H⋯O and...

3-[(E)-(Benzyl­iminiumyl)meth­yl]-6,8-di­chloro-2H-chromen-4-olate

In the title compound, C17H13Cl2NO2, the H atom of the -OH group is transferred to the N atom of the imine, forming a zwitterion. Thus, there is a intra-molecular O⋯H-N, rather than O-H⋯N, hydrogen bond, which forms a six-membered ring.

Cytotoxic activity of new acetoxycoumarin derivatives in cancer cell lines.

BACKGROUND Coumarin and their derivatives are important and useful compounds with diverse pharmacological properties. In the present study, we evaluated the in vitro cytotoxic activity of new acetoxycoumarin derivatives: 4-(7-methoxy-4-methyl-2-oxo-2H-chromen-3-yl)phenyl acetate (1), 4-(1-methyl-3-oxo-3H-benzo[f]chromen-2-yl)phenyl acetate (2), 4-(6-propionamido-4-methyl-2-oxo-2H-chromen-3-yl) ...

Discussion Word Count: 6,671 Abbreviations and definitions: ACPU, 1-(Adamantan-1-yl)-3-(1-(2-(7-hydroxy-2-oxo-2H-chromen- 4-yl)acetyl)piperidin-4-yl)urea; ARDS, Acute Respiratory Distress Syndrome; AUDA, 12-(3- Adamantan-1-yl-ureido)-dodecanoic acid; CDU, 1-cyclohexyl-3-dodecyl urea; ChEH, Cholesterol Epoxide Hydrolase; CMNPO, Cyano(6-methoxy-naphthalen-2-yl)methyl trans-[(3-phenyloxiran-2-

Zwitterionic 1-{(1E)-[(4-hy­droxy­phen­yl)iminio]meth­yl}naphthalen-2-olate: crystal structure and Hirshfeld surface analysis

The title zwitterion, C17H13NO2 (systematic name: 1-{(1E)-[(4-hy-droxy-phen-yl)iminium-yl]meth-yl}naphthalen-2-olate), features an intra-molecular charge-assisted N+-H⋯O- hydrogen bond. A twist in the mol-ecule is evident around the N-C(hy-droxy-benzene) bond [C-N-C-C torsion angle = 39.42 (8)°] and is reflected in the dihedral angle of 39.42 (8)° formed between the aromatic regions of the mol-...