Preparation of Some Novel Trisubstituted 1,3,5-Triazines and Hybrid Linker Mode 1,3,5-Triazine Derivatives and Their Biological Evaluation
摘要:
We report a new route to the preparation of C-3-symmetrical multivalent hybrid-type molecules having a tris-aminoethylamine (TAEA) linker group and 1,3,5-triazine recognition moieties in the molecule and we also report the results of biological evaluation of their anti-herpes simplex virus type 1 (anti-HSV-1) activity and cytotoxic activity against Vero cells. Among the tested compounds, a new mid-size C-2-symmetrical multivalent hybrid-type molecule (10aq) showed a high level of anti-HSV-1 activity (EC50 = 19.7 mu M) with low cytotoxicity (CC50 > 200 mu M) against Vero cells. A new C-S-symmetrical multivalent derivative (4ab) also showed high anti-HSV-1 activity (EC50 = 1.77 mu M) with low cytotoxicity (CC50 > 200 mu M). The hybrid-type C-2-symmetrical multivalent mid-size molecule (10aq) seems to be an interesting new lead in the search for new hybrid-type symmetrical multivalent antiviral compounds.
A method of improving the stability of a quaternary ammonium salt and a method of efficiently preparing the quaternary ammonium salt having improved stability.
一种提高季铵盐稳定性的方法和一种高效制备稳定性提高的季铵盐的方法。
PROCESS FOR PRODUCING CARBOXYLIC ACID DERIVATIVE AND CONDENSING AGENT COMPRISING QUATERNARY AMMONIUM SALT
申请人:TOKUYAMA CORPORATION
公开号:EP1085000A1
公开(公告)日:2001-03-21
A process for producing a carboxylic acid derivative characterized by mixing a quaternary ammonium salt having a specific triazine ring in the molecule, a carboxylic acid compound, and a compound having a nucleophilic functional group to conduct the condensation reaction of the carboxylic acid compound with the compound having a nucleophilic functional group; and a condensing agent comprising the quaternary ammonium salt. By the process, the condensation reaction can be conducted under mild conditions and a carboxylic acid derivative, especially an amide or ester compound, can be obtained in high yield.
The present invention aims to provide a method for producing a polyrotaxane which enables industrially advantageous production of a polyrotaxane with a high inclusion rate.
The present invention relates to a method for producing a polyrotaxane that includes a cyclodextrin; a compound having a repeating structural unit represented by the following formula (1), and threading through a cavity of the cyclodextrin in a skewered manner to be included in the cyclodextrin; and capping groups individually placed at each end of a molecule of the compound having a repeating structural unit represented by the formula (1) to prevent the cyclodextrin from separating, the method comprising: a step 1 of mixing the compound having a repeating structural unit represented by the formula (1) and the cyclodextrin in an aqueous medium to prepare an aqueous dispersion of pseudopolyrotaxan particles in which the compound having a repeating structural unit represented by the formula (1) is included in a cavity of a cyclodextrin molecule in a skewered manner; and a step 2 of mixing a triazine compound represented by the formula (2), a compound having at least one tertiary amino group, the aqueous dispersion of pseudopolyrotaxane particles prepared in the step 1, and a capping agent to introduce capping groups individually at each end of a molecule of the compound having a repeating structural unit represented by the formula (1) in the pseudopolyrotaxane particles,
wherein, in the formula (2), R1 and R2 are each independently a C1-C4 alkyl group or a C6-C8 aryl group, and X represents a halogen atom.
A method of improving the stability of a quaternary ammonium salt and a method of efficiently preparing the quaternary ammonium salt having improved stability.