Cells of Sulfolobus acidocaldarius contain about 2.5% total lipid on a dry-weight basis. Total lipid was found to contain 10.5% neutral lipid, 67.6% glycolipid, and 21.7% polar lipid. The lipids contained C(40)H(80) isopranol glycerol diethers. Almost no fatty acids were present. The glycolipids were composed of about equal amounts of the glycerol diether analogue of glucosyl galactosyl diglyce...

Calcitriol (1α,25-dihydroxyvitamin D3, 1α,25(OH)2D3) is an essential hormone that works in cooperation with parathyroid hormone (PTH) and fibroblast growth factor-23 (FGF-23) to regulate calcium and phosphorus homeostasis. Previous in vivo studies in rats have shown that eldecalcitol, a vitamin D analog, is more active than calcitriol in stimulating calcium and phosphorus absorption in the inte...

A systematic study of sensitil'ilY enhancement in ' ~N NMR spectra of phosphorus-nilrogf'o compounds by 3IP.I5N polariSlllion tfllrtsff'r \'l as .,..rformed !ISing Iris-(dimethylamioo)phosphine ( I) as a model compound. The application of sen!ral mul1ipulse lechoiques (refocussed and oon-rdocussed INEPT. DEPT) lind dccoupling sclw>mes shows lh:tl muimum enhaocement \'I'as reached \'lith fhe non...

The synthesis of 2,4,6-triphenylphosphinine has been revisited and a general protocol for the preparation of such low-coordinate phosphorus compounds in good to excellent yields could be established. This allows to investigate several aspects of the chemistry of 2,4,6-triarylphosphinine, such as the reaction with in situ generated benzyne to give 2,4,6-triphenylphosphabarrelene. The correspondi...

The ambiphilic nature of geometrically constrained Group 15 complexes bearing the N,N-bis(3,5-di-tert-butyl-2-phenolate)amide pincer ligand (ONO3- ) is explored. Despite their differing reactivity towards nucleophilic substrates with polarised element-hydrogen bonds (e.g., NH3 ), both the phosphorus(III), P(ONO) (1 a), and arsenic(III), As(ONO) (1 b), compounds exhibit similar reactivity toward...

As growth-promoting feed additives, compound acidifiers (CAs) have been widely reported in many farmed fish species, whereas there is little information on the application of CAs eel diet. The present trial was conducted to evaluate supplementation effects growth performance, serum biochemical parameters, and body composition juvenile American (Anguilla rostrata). levels diet were 0, 2.0, 3.0, ...

The spin labeled analog of Thio-Tepa, l-oxyl-2,2,6,6-tetramethyl-4-piperidylN,N;N',N'-bis (ethylene )-phosphorodiamidothioate (SL-O-TT), which contains a nitroxyl free radical linked by an oxygen bridge to phosphorus, has antitumor properties against P388 murine leukemia (T/C = 242) and a higher therapeutic ratio (5.15) than its parent compound, Thio-TEPA (2.75). The drug is less toxic to P388 ...

A series of new neutral mononuclear or dinuclear gold(I) complexes and a cyclic cationic tetranuclear amidogold(I) complex comprising of the phosphines 1,2-bis(dimethylphosphino)ethane (dmpe), μ-1,2-bis(diphenylphosphino)ethane (dppe), μ-1,3-bis(diphenylphosphino)propane (dppp), μ-1,5-bis(diphenylphosphino)pentane (dpppe), μ-1,6-bis(diphenylphosphino)hexane (dpph) or trimethylphosphine, and sev...