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Safrole-2',3'-oxide induces cytotoxic and genotoxic effects in HepG2 cells and in mice.
Safrole-2',3'-oxide (SAFO) is a reactive electrophilic metabolite of the hepatocarcinogen safrole, the main component of sassafras oil. Safrole occurs naturally in a variety of spices and herbs,Expand
Triazole-modified calix[4]crown as a novel fluorescent on-off switchable chemosensor.
A novel fluorescent on-off switchable chemosensor 1 with two different types of cationic binding sites is synthesized, which is composed of a triazole-modified calix[4]crown in the 1,3-alternateExpand
Synthesis of Calix[4]arenes with Four Different "Lower Rim" Substituents.
Calix[4]arenes with four different "lower rim" substituents were synthesized following six-step sequences. The first alkyl group (R(1)) was introduced using R(1)X and CH(3)ONa, and then reaction withExpand
Cooperative recognition of a copper cation and anion by a calix[4]arene substituted at the lower rim by a beta-amino-alpha,beta-unsaturated ketone.
We report herein a new ditopic calix[4]arene receptor 25,27-bis-{[4-amino-4-(1-naphthyl)-2-oxo-3-butenyl]oxy}-26,28-dihydroxycalix[4]arene (2) for the simultaneous complexation of anionic andExpand
Triazole- and azo-coupled calix[4]arene as a highly sensitive chromogenic sensor for Ca2+ and Pb2+ ions
Abstract A novel chromogenic calix[4]arene 3 , which has within a molecule both the triazoles and the hydroxyl azophenols as the metal-binding sites and the azophenol moiety as a coloration sites wasExpand
Upper rim allyl- and arylazo-coupled calix[4]arenes as highly sensitive chromogenic sensors for Hg2+ ion.
The syntheses and chromogenic properties of calix[4]arenes, carrying 5,17-bisallyl-11,23-bis(p-X-phenyl)azo 3a-c, 5,11,17-triallyl-23-(p-X-phenyl)azo 4a-c, andExpand
A Bifunctional Chromogenic Calix[4]arene Chemosensor for Both Cations and Anions: A Potential Ca2+ and F– Switched INHIBIT Logic Gate with a YES Logic Function
A bifunctional chromogenic calix[4]arene 3, which contains both triazoles and hydroxy azophenols as both cationic and anionic recognition sites and the azophenol moiety as a coloration unit, wasExpand
Dual-mode recognition of transition metal ions by bis-triazoles chained pyrenes
Abstract Fluorescent chemosensors 7−10 , with variable methylene chain length as spacers between the two triazole methyl ether units, have been synthesized under ‘Click’ condition, where theExpand
Highly Selective Fluorescent Sensors for Hg2+ and Ag+ Based on Bis-triazole-Coupled Polyoxyethylenes in MeOH Solution
Fluorescent chemosensors 6–9, with variable length polyoxyethylenes between two triazolylmethyl ether units, have been synthesized under “click” conditions in which the bis-triazoles andExpand
1,3-Alternate calix[4]arene as a homobinuclear ditopic fluorescent chemosensor for Ag+ ions.
A novel 1,3-alternate calix-[4]arene L, containing two different cationic binding sites of bis-triazoles and bis-enaminone groups, was synthesized and shown to be a homobinuclear ditopic fluorescentExpand