4s-ferrugineone and 4s,5s-ferrugineol as pheromones of palm weevils were synthesized in 3 and 4 steps, respectively, starting from nonane-5-one employing samp-/ramp -hydrazone methodology. 5-nonanone is transformed to its corresponding ramp hydrazone by reaction with the enantiomerically pure hydrazine ramp. metalation with lithium diisopropylamide (lda) in ether to form azaenolate, followed by...

We have evaluated the Technicon SMA 12/60 modification of a glucose oxidase/peroxidase-3-methyl2-benzothiazolinone hydrazone-N, N-dimethylaniline method, and find it acceptable. Added bilirubin, creatinine, dextrans, and uric acid did not interfere. We compared values for patients’ sera by this method to those by the glucose oxidase/peroxidase-2,2’-azinodiethylbenzothiazoline-6-sulfonic acid, n...

Two simple, precise and accurate spectrophotometric methods were developed for the estimation of Gefitinib in bulk drug and in pharmaceutical formulations. Method A and B is based on oxidation of followed by coupling of 3metyl-1,2-benzothiazolinone hydrazone (MBTH) with Gefitinib using Ferric chloride and Cerric ammonium nitrate(CAN) and measuring the chromogen at the λmax of 438 and 675 respec...

A simple spectrophotometric method is reported her for the estimation of reserpine in polyherbal formulations. Estimation is based on the reaction with3-methylbenzolinone-2hydrazone (MBTH) reagent in presence of cerric ammonium sulphate to yield a violet coloured chromogen, which exhibits and absorption maxima at 580 nm. The chromogen is stable for 10 minutes.

The production of the H(2)O(2)-generating enzyme pyranose oxidase (POD) (EC 1.1.3.10) (synonym, glucose 2-oxidase), two ligninolytic peroxidases, and laccase in wood decayed by three white rot fungi was investigated by correlated biochemical, immunological, and transmission electron microscopic techniques. Enzyme activities were assayed in extracts from decayed birch wood blocks obtained by a n...

To explore the effect of the nature of substitutions on the structural parameters and hydrogen-bond inter-actions in N-acyl-hydrazone derivatives, the crystal structures of three ortho-substituted N-acyl-hydrazone derivatives, namely (E)-N-{2-[2-(2-chloro-benzyl-idene)hydrazin-yl]-2-oxoeth-yl}-4-methyl-benzene-sulfon-amide, C16H16ClN3O3S (I), (E)-N-{2-[2-(2-methyl-benzyl-idene)hydrazin-yl]-2-ox...

4S-ferrugineone and 4S,5S-ferrugineol as pheromones of palm weevils were synthesized in 3 and 4 steps, respectively, starting from nonane-5-one employing SAMP-/RAMP -hydrazone methodology. 5-nonanone is transformed to its corresponding RAMP hydrazone by reaction with the enantiomerically pure hydrazine RAMP. Metalation with lithium diisopropylamide (LDA) in ether to form azaenolate, followed by...