摘要:
This invention relates to an improved process for the formation of N-(1-alkoxyalkyl)amides with coproduction of alkylidene bisamides. The N-(1-alkoxyalkyl)formamides of this invention are prepared by reacting formamide with an acetal or hemiacetal carboxylate ester represented by the formulas: ##STR1## wherein R is C.sub.1 -C.sub.8 alkyl, aralkyl or aryl; R.sub.1 and R.sub.2 are C.sub.1 -C.sub.8 alkyl, or aryl; and R.sub.3 is secondary or tertiary alkyl having from 3-8 carbon atoms.The reaction is carried out in the presence of an acid catalyst such as a strong acid ion exchange resin.
摘要:
Phenylcarboxylic acid derivatives having the formula: ##STR1## wherein R.sup.1 and R.sup.2 are each H, halogen, alkyl, haloalkyl, alkanoyl, cycloalkyl, nitro, amino, --O--D--R.sup.5 (D is alkylene, R.sup.5 is H, amino, morpholino, carboxyl, phthalimido, phenyl, epoxy), substituted or unsubstituted phenoxy, substituted or unsubstituted phenylalkylamino, carboxylalkenyl, or both form alkylenedioxy; R.sup.3 is H, --E--R.sup.6 (E is alkylene, R.sup.6 is H, carboxyl, cyano, OH, phenylalkoxy, or halogen-substituted phenyl, or phenylcarbamoyl), --CO--G--R.sup.7 (G is alkylene, R.sup.7 is H, substituted or unsubstituted phenylcarbamoyl), substituted or unsubstituted benzoyl, alkenyl, carbamoyl, phenyl, or halophenyl; R.sup.4 is H or alkyl; A is alkylene, alkylene condensed with cycloalkyl ring, or alkenylene; B is alkylene or alkenylene; l is 0 or 1. Said compounds have fatty acid synthesis-inhibitory activity, cholesterol synthesis-inhibitory activity and are useful as antilipidemic agent, prophylactic and treating agent of artherosclerosis, prophylactic and treating agent of obesity, antidiabetics.
摘要:
An imidazoline compound, suitable for an amphoteric surfactant, is prepared from by reacting (a) an alkylimidazoline with a monohaloacetic acid in (b) a lower alcohol and (c) water in the presence of an alkali, by-production of inorganic salts being prevented by controlling proportions of (a), (b) and (c) within the scope shown in the drawing.
摘要:
Amides of 3-methyl-4-phenyl-3-butenoic acid of the formula ##STR1## wherein R represents hydrogen, alkyl, hydroxyalkyl or cycloalkyl and R' represents alkyl, hydroxyalkyl or cycloalkyl, or R and R' together represent --CH.sub.2 --CH.sub.2 --O--CH.sub.2 --CH.sub.2 --, which are obtained by reacting the chloride of 3-methyl-4-phenyl-3-butenoic acid and amines of formula ##STR2## wherein R and R' have the above indicated meanings, having a high hypolipemizing activity.
摘要:
The invention concerns a process for enriching an iron mineral from a silicate containing iron ore by inverse flotation comprising the addition of a collector or collector composition comprising at least one of the compounds of formulae RC(O)N(Z—O—X—NH2)2 (Ia); RC(O)N(Z—O—X—NH2)2H+ Y− (Ib); in which X is an aliphatic alkylene group containing 2 to 6 carbon atoms; Z is an aliphatic alkylene group containing 2 to 6 carbon atoms; Y− is an anion; and R is a saturated or unsaturated, linear or branched, aliphatic or aromatic moiety having between 7 and 23 carbon atoms. The invention also relates to the novel compounds according to formulae (Ia) and (Ib), compositions comprising said compounds and the use of compounds and formulations as collectors for enriching of iron mineral.
摘要:
The present invention relates to specific sphingolipids/sphingolipid derivatives as pharmaceutical compositions as well as their use in the preparation of medicaments for the treatment, prevention and/or amelioration of disorders relating to pathological processes in lipid rafts.
摘要:
A compound selected from those of formula (I): Medicinal products containing the same which are useful in the treatment of disorders of the melatoninergic system.
摘要:
The present invention provides a drug delivery vehicle that can improve the pharmacokinetics of pharmacological agents. The invention relates to a multifunctional carrier capable of delivering a carried material such as a pharmacological agent or genetic material to a recipient. The multifunctional carrier includes a multifunctional core and a plurality of adduct molecules bonded thereto. The molecular carrier has surface functional groups which can be associated with a carried material. The carried material can be associated with the molecular carrier through covalent interactions or ionic interactions. The polyvalent core can be ethylene-diamine tetraacetic acid (EDTA) or succinic acid. The invention also relates to methods for producing and using such molecules.
摘要:
Compound of formula (I): ##STR1## wherein: T represents alkylene,A and B together form a naphthalene, dihydronaphthalene, or tetrahydronaphthalene group,R represents hydrogen, hydroxy, R' or OR', R' being as defined in the description,G.sub.1 represents halogen, a radical R.sub.1 or a group --O--CO--R.sub.1, R.sub.1 being as defined in the description,G.sub.2 represents a group selected from: ##STR2## X, R.sub.2 and R.sub.21 being as defined in the description, and medicinal products containing the same which are useful in the treatment of a condition related to the melatoninergic system.
摘要:
Aminoalcohols of formula: ##STR1## in which R.sub.1 is alkyl, R.sub.2 H or alkyl, R.sub.3 in particularly H, alkyl, phenylakyl, alkanoyl, phenylalkanoyl, in which N, R.sub.2 and R.sub.3 together form a heterocycle saturated with 5 to 7 chain links.Analgesic medicaments.