phosphorus (p) is one of the most vital elements for all living organisms which acts as aconstituent of essential biomolecules such as nucleic acids, phospholipids, and phosphosugars,and as a major contributor to almost all metabolic reactions including photosynthesis,respiration, and energy delivery. it is one of the most needed nutrients for plant growth anddevelopment. despite high levels of...

structurally different trimethyl silyl ethers are oxidized with bu4/nio4 in the presence of alcl3 and bf3 as catalysts in ch3cn and chcl3 under reflux conditions. the corresponding carbonyl compounds are isolated in good yields.

Two juvenile hormones are isolated from organ cultures of corpora allata of the tobacco hornworm moth, Manduca sexta Johannson, and are purified by high-resolution liquid chromatography. These are identified as methyl (2E, 6E)-(10R)-10,11-epoxy-3,7,11-trimethyl-2,6-dodecadienoate, a new natural hormone, and methyl (2E,6E) - (10R,11S) - 10,11 - epoxy - 3,7,11 - trimethyl-2,6-tridecadienoate. [(1...

The title compound, [NiCl(2)(C(3)H(9)P)(3)], was obtained as a product of the reaction of [NiCl(2)(PMe(3))(2)] with an equivalent trimethyl-phosphine in diethyl ether. It easily loses trimethyl-phosphine at room temperature to give NiCl(2)(PMe(3))(2). There are two independent mol-ecules in the asymmetric unit, and their bond lengths and angles are similar. The Ni environment is trigonal bipyra...

The title compound, [Cu(3)(C(6)H(18)NSi(2))(C(9)H(24)N(3)Si(2))(2)], is a trinuclear Cu(I) complex. A crystallographic twofold axis passes through one Cu(I) atom and the N atom of the bis-(trimethyl-silyl)amide ligand that bridges between the other two Cu(I) atoms. The Cu-Cu bonds bridged by the guanadinate ligands [2.7913 (9) Å] are slightly longer than the Cu-Cu bond bridged by the bis-(trime...

In the title compound, [Ti(C(8)H(13)Si)(C(11)H(21)Si(2))Cl(2)], the Ti(IV) atom is bonded to two Cl atoms, one 1,3-bis-(trimethyl-sil-yl)cyclo-penta-dienyl (Si(2)Cp) and one (trimethyl-sil-yl)cyclo-penta-dienyl ring (SiCp). The Si(2)Cp centroid-titanium distance is 2.0763 (10) Å and the SiCp centroid-titanium distance is 2.0793 (10) Å. The angle subtended at the Ti atom by the centroids of both...

Chitosan and its derivatives have attracted great attention due to their properties beneficial for application to wound healing. The main focus of the present review is to summarize studies involving chitosan and its derivatives, especially N,N,N-trimethyl-chitosan (TMC), N,O-carboxymethyl-chitosan (CMC) and O-carboxymethyl-N,N,N-trimethyl-chitosan (CMTMC), used to accelerate wound healing. Mor...