142208-35-3Relevant academic research and scientific papers
Synthesis, structure, and in vitro antiproliferative activity of cyclic hypervalent organobismuth(III) chlorides and their triphenylgermylpropionate derivatives
Zhang, Xiao-Wen,Xia, Jun,Yan, Hui-Wen,Luo, Sheng-Lian,Yin, Shuang-Feng,Au, Chak-Tong,Wong, Wai-Yeung
, p. 3019 - 3026 (2009)
Six compounds of cyclic hypervalent organobismuth(III) chlorides and triphenylgermylpropionates bearing a nitrogen or sulfur atom as intramolecular coordination atom have been synthesized and characterized. The results of single-crystal X-ray analysis reveal that the eight-membered tetrahydroazabismocine rings are highly flexible. The Bi-S or Bi-N bond lengths in the thiabismocine or azabismocine derivatives are dependent on how the substituted groups are acting on the Bi, S or N atom. The replacement of the chlorine atom in azabismocine and thiabismocine with the triphenylgermylpropionic group (Ph3GeCH2CH2COO{single bond}) leads to the lengthening of Bi-N and Bi-S bond. The substituents connected with the nitrogen atom also have an effect on the Bi-N bond length of azabismocine. For example, a cyclohexyl group has electron-donating ability higher than a phenyl group; the replacement of the former by the latter would lead to the decline of Bi-N bond length and increase of CAr-Bi-CAr angle in the eight-membered ring. The in vitro antiproliferative activities of the fabricated materials were compared on gastric carcinoma cells by means of the 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl tetrazolium bromide (MTT) method. It was found that the compounds show antiproliferative activity on gastric carcinoma cells (MGC-803) much higher than that of cisplatin. Moreover, there is enhancement of antiproliferative activity when the chlorine atom of the bismocine compounds is replaced by the triphenylgermylpropionic group, giving a low IC50 value of 0.7 μM for thiabismocine triphenylgermylpropionate.
Studies on the condensation of highly hindered α-amino methylphosphonates with β-triphenylgermanyl propionic acid
Mao, Li-Juan,Chen, Ru-Yu
, p. 166 (2007/10/03)
The condensation reaction of highly hindered α-amino methylphosphonates with β-triphenylgermanyl propionic acid was studied.The two novel series 4-5 were designed and synthesized in good yields.Preliminary bioassays showed that the compounds 4-5 exhibited significant antitumor activities both in vivo and in vitro. - Keywords: Condensation reaction, α-Amino methylphosphonate, β-Triphenylgermanyl propionic acid, Antitumor activity
