16839-13-7Relevant academic research and scientific papers
Synthesis, characterization and properties of titanium phosphonate clusters
Hayami, Ryohei,Sagawa, Takuya,Tsukada, Satoru,Yamamoto, Kazuki,Gunji, Takahiro
, p. 1 - 8 (2018)
Titanium phosphonate clusters were synthesized by the reactions of titanium tetraisopropoxide (Ti(OiPr)4) with arylphosphonic acids (ArPO3H2, Ar = Ph, 1-Nap, 4-MeOPh, 4-FPh, 4-ClPh, 4-BrPh, and 4-BrBn) and H2O in tetrahydrofuran (THF) at room temperature. [Ti4(μ3-O)(OiPr)5(μ-OiPr)3(O3PAr)3]·solv (Ar = Ph (1), 1-Nap (2), 4-MeOPh (3), 4-FPh (4), 4-ClPh (5); solv = thf for 1 and 2 or 2-propanol for 3–5) were isolated as new Ti4P3-type clusters, while Ti7(μ3-O)2(OiPr)6(μ-OiPr)6(O3PBnBr)6 (6) was isolated as a Ti7P6-type cluster. A co-crystal of Ti4P3- (7a) and Ti7P6-type (7b) clusters were obtained when 4-BrPhPO3H2 was used, and [Ti(OiPr)(acac)(O3PPh)]4 (8), a new cage cluster, was obtained when Ti(acac)2(OiPr)2 (Hacac = acetylacetone) was reacted with PhPO3H2.
Towards the next generation of dual Bcl-2/Bcl-xL inhibitors
Varnes, Jeffrey G.,Gero, Thomas,Huang, Shan,Diebold, R. Bruce,Ogoe, Claude,Grover, Paul T.,Su, Mei,Mukherjee, Prasenjit,Saeh, Jamal Carlos,Macintyre, Terry,Repik, Galina,Dillman, Keith,Byth, Kate,Russell, Daniel John,Ioannidis, Stephanos
, p. 3026 - 3033 (2014/06/24)
Structural modifications of the left-hand side of compound 1 were identified which retained or improved potent binding to Bcl-2 and Bcl-x L in in vitro biochemical assays and had strong activity in an RS4;11 apoptotic cellular assay. For example, sulfoxide diastereomer 13 maintained good binding affinity and comparable cellular potency to 1 while improving aqueous solubility. The corresponding diastereomer (14) was significantly less potent in the cell, and docking studies suggest that this is due to a stereochemical preference for the RS versus SS sulfoxide. Appending a dimethylaminoethoxy side chain (27) adjacent to the benzylic position of the biphenyl moiety of 1 improved cellular activity by approximately three-fold, and this activity was corroborated in cell lines overexpressing Bcl-2 and Bcl-xL.
SYNTHESIS OF ARYL- AND HETARYLPHOSPHONATES
Demnik, N. N.,Kabachnik, M. M.,Novikova, Z. S.,Beletskaya, I. P.
, p. 1913 - 1915 (2007/10/02)
The reaction of tris(trimethylsilyl) phosphite with aryl or hetaryl halides under homogeneous catalysis conditions gave bis(trimethylsilyl)phosphonates.Treatment of these products with methanol gave the corresponding aryl- or hetarylphosphonic acids in quantitative yield.Keywords: tris(trimethylsilyl) phosphite, aryl and hetaryl halides, homogeneous catalysis, bis(trimethylsilyl)phosphonates, arylphosphonic acids.
