Three new abietane-type diterpenoids, 7a-butoxyabieta-8,12-diene-11,14-dione (1), 6a,7a-dihydroxyabieta-8,12-dien-11,14-dione (2), and 6a,7b-dihydroxyabieta8,12-diene-11,14-dione (3) were isolated from the bark of Cryptomeria japonica D. Don. Their structures were established by means of 1D and 2D NMR, IR, UV, and HR-EI-MS spectra and comparison with the data of known analogues. ã 2016 Publishe...

In order to know the contribution of adrenal and gonadal androgens to the development of the side gland of Suncus murinus, we studied the effects of gonadectomy and adrenalectomy on gland thickness and the plasma levels of testosterone, androstenedione (delta 4-dione) and dehydroepiandrosterone (DHA). In males, castration decreased gland thickness to 71% of the control. The plasma levels of del...

The bacterial degradation of cholic acid under anaerobic conditions by Pseudomonas sp. N.C.I.B. 10590 was studied. The major unsaturated neutral compound was identified as 12 beta-hydroxyandrosta-4,6-diene-3,17-dione, and the major unsaturated acidic metabolite was identified as 12 alpha-hydroxy-3-oxochola-4,6-dien-24-oic acid. Eight minor unsaturated metabolites were isolated and evidence is g...

This paper describes the properties and partial purification from Pseudomonas testosteroni of enzymes concerned with the introduction of unsaturation into ring A of 3-ketosteroids. These enzymes promote the formation of the A1e4-diene-3-one structure from steroids bearing C-19 angular methyl groups and the formation of ring A phenols from lQ-nor-steroids. P. testosteroni is a strict aerobe whic...

mycobacterium smegmatis ptcc 1307 (cip 73.26) was used as a microbial agent to produce androsta-1,4-diene-3,17-dione (add) and androst-4-ene-3,17-dione, two useful precursors in the synthesis of steroid drugs. the side chain of cholesterol, as the substrate, was selectively cleaved in the presence of five enzyme inhibitors. an intermediate structure with intact side chain, cholest-4-ene-3-one, ...

Insulin-like growth factor-1 receptor (IGF-1R) is a growth factor receptor tyrosine kinase acting as a critical mediator of cell proliferation and survival. Novel 5-benzylidenethiazolidine-2,4-dione (5) and 5-(furan-2-ylmethylene)thiazolidine-2,4-dione (6) compounds were identified as potent and selective IGF-1R inhibitors via hierarchical virtual screening. Initial SAR and biological activity ...

In the crystal of the title compound, C(21)H(15)ClNO(2) (+)·CF(3)SO(3) (-), adjacent cations are linked through C-H⋯π and π-π inter-actions [centroid-centroid distance = 3.987 (2) Å], and neighboring cations and anions via C-H⋯O and C-F⋯π inter-actions. The acridine ring system and benzene ring are oriented at a dihedral angle of 1.0 (1)° while the carboxyl group is twisted at an angle of 85.0 ...

The use of digitonin to permeabilize the plasma membrane of Trypanosoma brucei procyclic and bloodstream trypomastigotes allowed the identification of a non-mitochondrial nigericin-sensitive Ca2+ compartment. The proton ionophore carbonyl cyanide p-trifluoromethoxyphenylhydrazone (FCCP) was able to cause Ca2+ release from this compartment, which was also sensitive to sodium orthovanadate. Prein...

Rapid diagnosis is a prerequisite for institution of effective treatment and reducing the mortality and morbidity of falciparum malaria. This study was taken up to compare the efficacy of various rapid methods viz, acridine orange, Plasmodium falciparum histidine rich protein II antigen detection and Field's stain with traditional microscopy i.e, Leishman stain for diagnosing falciparum malaria...

An acridine derivative was covalently linked to the 5' end of a homopyrimidine oligonucleotide. Specific binding to a homopurine-homopyrimidine sequence of duplex DNA was demonstrated by spectroscopic studies (absorption and fluorescence) and by "footprinting" experiments with a copper phenanthroline chelate used as an artificial nuclease. A hypochromism and a red shift of the acridine absorpti...