摘要:
The present invention relates to a process wherein dichloromonophenyl phosphate and monochlorodiphenyl phosphate is reacted with an aliphatic alcohol, in the presence of a Lewis acid catalyst, in the absence of solvent, at a temperature of above 60 to 200° C, and at a pressure of 0.001 to 1.1 bara, provided that the reaction mixture is sparged with an inert carrier gas if the pressure is above 0.67 bars. The present invention further relates to mixtures of monoalkyl Biphenyl phosphates and dialkyl monophenyl phosphates obtainable from this process and the use of such mixtures as a plasticiser and/or a flame retardant.
摘要:
The flameproof resin composition according to the present invention comprises (A) 100 parts by weight of a rubber modified polystyrene resin containing (a 1 ) 20 to 100 % by weight of graft copolymer prepared by graft-polymerizing 5 to 65 parts by weight of a rubber polymer, 35 to 95 parts by weight of an aromatic vinyl monomer, 1 to 20 parts by weight of a monomer copolymerizable with said aromatic vinyl monomer and 0 to 15 parts by weight of a monomer for providing processability and heat resistance; and (a 2 ) 0 to 80 % by weight of copolymer prepared by polymerizing 60 to 90 parts by weight of an aromatic vinyl monomer, 10 to 40 parts by weight of a monomer copolymerizable with said aromatic vinyl monomer and 0 to 30 parts by weight of a monomer for providing processability and heat resistance; (B) 0.1 to 15 parts by weight of an oxaphosphorane compound; and (C) 0 to 20 parts by weight of an aromatic phosphoric acid ester compound.
摘要:
The present invention relates to compounds according to the structure (I): Where R is -CH 3 or -CH 2 CH 2 CI; R' is C 1 -C 7 alkyl or -CH 2 CH 2 C1; R 2 or R 4 is OPO 3 H 2 , NO 2 , OCO(Glu-OH), NHCO(Glu-OH), NHR 7 and unassigned groups of R 2 , R 3 , R 4 , R 5 and R 6 are, independently, H, F, Cl, Br, I, OH, OPO 3 H 2 , OCH 3 , CF 3 , OCF 3 , NO 2 , CN, SO 2 CH 3 , SO 2 CF 3 , COCH 3 , COOCH 3 , SCH3, SF 5 , NH 2 , NHR 7 , N(CH 3 ) 2 , OP0 3 H 2 , or a C 1 -C 7 alkyl group with the proviso that when any two of unassigned groups of R 2 , R 3 , R 4 , R 5 or R 6 are other than H, the other two of unassigned groups of R 2 , R 3 , R 4 , R 5 or R 6 are H. R 7 is H or polyglutamyl as described. Phosphoric acid and glutamic acid can be a free acid or pharmaceutically acceptable salt thereof.
摘要:
Novel quinone and catechol compositions, compositions containing prodrugs of quinone and catechol compositions, and methods of use for the treatment of solid tumor cancers and other vascular proliferative disorders. The disclosure particularly relates to the discovery of dual activity agents capable of generating both a vascular targeting effect and direct tumor cell cytotoxicity in order to achieve an enhanced anti-tumor response in a patient.
摘要:
L-DOPA amide derivatives, pharmaceutical compositions containing same and their use in the treatment of conditions associated with impaired dopaminergic activity/signaling (e.g., Parkinson disease) are disclosed.
摘要:
The present invention relates to non-classical cannabinoids that are ligands of the peripheral cannabinoid receptor CB2, and to pharmaceutical compositions thereof comprising as an active ingredient novel (+) α-pinene derivatives, which are useful for prevention and treatment of autoimmune diseases including but not limited to rheumatoid arthritis, multiple sclerosis, systemic lupus erythematosus, myasthenia gravis, diabetes mellitus type I, hepatitis, psoriasis, tissue rejection in organ transplants, malabsorption syndromes such as celiac disease, pulmonary diseases such as asthma and Sjögren's syndrome, inflammation including inflammatory bowel disease, pain including peripheral, visceral, neurophathic inflammatory and referred pain, muscle spasticity, cardiovascular disorders including arrhythmia, hypertension and myocardial ischemia, neurological disorders including stroke, migraine and cluster headaches, neurodegenerative diseases including Parkinson's disease, Alzheimer's disease, amyotrophic lateral sclerosis, Huntington's chorea, prion-associated neurodegeneration, CNS poisoning and certain types of cancer.
摘要:
The original synthesis of combretastatin A-2 (1a) was modified to provide an efficient scale-up procedure for obtaining this antineoplastic stilbene. Subsequent conversion to a useful prodrug was accomplished by phosphorylation employing in situ formation of dibenzylchlorophosphite followed 30 by cleavage of the benzyl ester protective groups with bromotrimethylsilane to afford phosphoric acid intermediate 11. The latter was immediately treated with sodium methoxide to complete a practical route to the disodium phosphate prodrug (2a). The phosphoric acid precursor (11) of phosphate 2a was employed in a parallel series of reactions to produce a selection of metal and ammonium cation prodrug candidates. Each of the phosphate salts (2a-q) was evaluated with respect to relative solubility behavior, cancer cell growth inhibition, and antimicrobial activity.
摘要:
Zinc complexes capable of scavenging substances bearing anionic substituents, which are represented by the general formula (I-0): (I-0) wherein R's may be the same or different from each another and are each H; alkyl having 1 to 16 carbon atoms; acyl, carboxyalkyl, acylalkyl, carbamoylalkyl, cyanoalkyl, hydroxyalkyl, amino- alkyl, or haloalkyl (wherein each alkyl moiety has 1 to 16 carbon atoms); carboxyl; carbamoyl; hydroxyl; cyano; amino; or halogeno (with the proviso that the case wherein all of R's are H is excepted).
摘要:
The invention relates to the oligophosphates of the general formula (I), wherein R and R independently represent, individually selectable for every X, hydrogen, halogen, halogen-substituted or halogen-unsubstituted alkyl, alkyl, cycloalkyl, aryl having 1 to 20 carbon atom each, or R and R together with the carbon atom X to which they are bound form the structure of the formula (II) or a cylocalkyl structure substituted or not substituted by halogen, or R or R , on the carbon atom X, also form, together with an R or R on a further carbon atom X', a cyclic structure that is substituted or not substituted by halogen, R to R independently are the same or different and may represent an alkyl having 1 to 10 carbon atoms or halogen, X represents carbon, m is an integer of from 4 to 7, n is an integer of from 1 to 30, y is 0 or 1, and q may independently be the same or different and represent an integer of from 0 to 5. When used in thermoplastic compositions, said oligophosphates have excellent flame-retarding properties, improved thermal stability, a good viscosity level and excellent flowability.
摘要:
The invention concerns novel cdc25 phosphatase inhibitors, and in particular cdc25-C, which correspond to the general formula (I) wherein: A represents a carbocyclic aryl radical optionally substituted 1 to 3 times by one or more radicals independently selected among a halogen atom and an alkyl, hydroxy, alkoxy, alkylthio or NR R radical wherein R and R represent a hydrogen atom or an alkyl radical or R and R form together with the nitrogen atom a heterocycle of 4 to 7 members comprising 1 to 2 heteroatoms, the members required to complete the heterocycle being selected independently among the CR R -, -O-, -S and NR - radicals, R and R representing independently each time they are involved a hydrogen atom or an alkyl, hydroxy, alkoxy, amino, alkylamino or dialkylamino radical, and R5 representing independently each time it is involved a hydrogen atom or an alkyl radical, or A represents a phenyl radical substituted by a phenyl radical optionally substituted 1 to 3 times by one or more radicals selected independently among a halogen atom and an alkyl, hydroxy, alkoxy, alkylthio or NR R radical wherein R and R represent a hydrogen atom or an alkyl radical; B represents a -(CH2)i-(CO)- or -NH-CO-(CH2)n or -(CH2)p and i and n being integers from 0 to 2 and p being an integer from 0 to 1; W represents a hydrogen atom or an alkyl radical; X represents a -(CH2)q- or (CH2)j-CO-(CH2)r-, q being an integer from 1 to 4 and j and r being integers from 0 to 6; Y represents in particular a nitrophenyl, aminophenyl, alkylaminophenyl or dialkylaminophenyl radical or the radical (T).