Neem seed preparations contain not only azadirachtin as the active insect antifeedant or growth regulator but also a variety of other limonoids, some of which are cytotoxic to N1E-115 neuroblastoma (mouse), 143B.TK− osteosarcoma (human) and Sf9 (insect) cultured cell lines. The most potent of th...

Epoxyazadiradione (1), a major compound derived from Neem oil, showed modest anti-plasmodial activity against CQ-resistant and CQ-sensitive strains of the most virulent human malaria parasite P. falciparum. A series of analogues were synthesized by modification of the key structural moieties of ...

Natural pyrethrins accumulate to high concentrations in the flower achenes of pyrethrum (Tanacetum cinerariifolium). They are extracted from dried flowers and widely used as a natural pesticide. Chrysanthemol synthase (CHS) is the first key enzyme in the biosynthesis of pyrethrins. In this work,...

Headspace volatiles collected from virgin females of the citrophilous mealybug, Pseudococcus calceolariae, contain three compounds not present in the headspace of control samples. The main female-specific compound is identified as [2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropyl]methyl 2-acetoxy...

The catalysts in the form of an activated carbon EuroPh supported Fe were prepared and characterized structurally and chemically by XRD, nitrogen sorption, FESEM, EDX, and ICP-AES methods. The active phase was magnetite Fe3O4. The concentration of Fe in the catalysts was equal to 0.68, 1.32, 2.6...

Within this study, we investigated a one-pot enzymatic redox cascade composed of different enoate reductases (5 EREDs from diverse bacterial origins) and various Baeyer-Villiger monooxygenases (4 BVMOs) with complementary regioselectivity that enabled access to six out of eight carvo-lactone ste...

The selective conversion of biomass-derived carvone in H2 was studied over (Al2O3, C and CeO2) supported Pd (mean size 2.8–3.0 nm), taking bulk Pd as benchmark. 100% carvacrol yield was achieved over Pd/Al2O3, Pd/C and bulk Pd at an inlet H2/carvone = 1/6, with appreciably higher rates for the ...

The use of monoterpenes as agrochemicals has been proposed, but the behavior of this family of compounds once they reach the soil environment has not been completely examined. In this work, we investigated the sorption of the two optical isomers of the monoterpene carvone, R-carvone and S-carvon...

In this work, vapor pressures, liquid-phase heat capacities, and phase behavior of two monoterpenoids, (+)-carvone and eugenol were studied. The vapor pressure experiments were performed using a static method over an environmentally relevant range of temperatures, from 258 K to 308 K. Liquid-pha...

Reeds (Phragmites communis) leaves were successfully used as template in synthesis of cobalt doped mesoporous silica (Co/SiO2/PC). The catalyst exhibited very high substrate conversion (100%) and relatively good product (carvone) selectivity (40.2%) for allylic oxidation of limonene to carvone u...

We have studied the effect of water on the selective conversion of biomass-derived carvone to carvacrol over Pd/Al2O3 (mean Pd size = 3 nm). Full selectivity to carvacrol was observed in H2O (H2O:Carvone = 1:12-6:1) without H2 or at an inlet H2:Carvone = 1:6. Carvacrol generation from carvone in...

The structural integrity and excellent immune system of the skin makes it a protective covering, inspite of its exposure to hazardous compounds. In the present study, the chemopreventive efficacy of D-carvone was studied in 7, 12-dimethylbenz[a]anthracene (DMBA) induced skin carcinogenesis. DMBA...

The immobilization of the FePcCl16 complex on the mesoporous silica SBA-15 and its performance in the eco-friendly oxidative dehydrogenation of carveol to carvone in the presence of t-butyl hydroperoxide (TBHP) under mild conditions is reported. The successful covalently anchored of FePcCl16 com...

A convenient and versatile synthesis of monosubstituted succinaldehydes and 3-substituted pyrroles from acetonitriles was devised. The methodology was applied to the preparation of 9, the penultimate intermediate in the Meinwald and Meinwald synthesis of Danaidone.12

Pathogenic bacteria that are resistant to β-lactam antibiotics mostly utilize serine β-lactamases to degrade the antibiotics. Current studies have shown that different subclasses of metallo β-lactamases (E[MBL]) are involved in the defense mechanism of drug resistant bacteria. Here we report ...

The antineoplastic and antibiotic natural product mithramycin (MTM) is used against cancer-related hypercalcemia and, experimentally, against Ewing sarcoma and lung cancers. MTM exerts its cytotoxic effect by binding DNA as a divalent metal ion (Me2 +)-coordinated dimer and disrupting the functi...

DIG-MSK (demycarosil-3D-β-d-digitoxosyl mithramycin SK; EC-8042), a novel analogue of mithramycin A, induced autophagy in HCT116 human colon carcinoma and, to a lesser extent, in A2780 human ovarian carcinoma cell lines, which was followed by apoptosis and/or necrotic cell death in a time-depen...

Chemotherapy resistance is a major clinical challenge for the management of locally advanced breast cancer. Accumulating evidence suggests a major role of cancer stem cells (CSCs) in chemoresistance evoking the requirement of drugs that selectively target CSCs in combination with chemotherapy. H...

DIG-MSK (demycarosyl-3D-β-d-digitoxosyl-mithramycin SK) is a recently isolated compound of the mithramycin family of antitumor antibiotics, which includes mithramycin A (MTA) and mithramycin SK (MSK). Here, we present evidence that the binding of DIG-MSK to DNA shares the general features of ot...

Mithramycin is a neoplastic antibiotic synthesized by various Streptomyces bacteria. It is under investigation as a chemotherapeutic treatment for a wide variety of cancers. Ongoing and forthcoming clinical trials will require pharmacokinetic analysis of mithramycin in humans, both to see if tar...