摘要:
The present invention relates to the compounds of the Formulae 1a and 1b and pharmaceutically acceptable acid addition salts thereof.The new 9-nitro-apovincaminol-3',4',5'-trimethoxybenzoate of the Formula 1a ##STR1## and the 11-nitro-apovincaminol-3',4',5'-trimethoxy-benzoate of the Formula 1b ##STR2## and pharmaceutically acceptable acid addition salts thereof can be prepared by nitrating the apovincaminol-3',4',5'-trimethoxy-benzoate of the Formula 11, ##STR3## if desired separating the mixture of the compounds of the Formulae 1a and 1b thus obtained into its components, if desired converting a compound of the Formula 1a or 1b thus obtained into pharmaceutically acceptable acid addition salts thereof.The new compounds of the present invention can be used in therapy in the treatment of psoriasis.
摘要:
The invention relates to the new 17,18-dehydro-apovincaminol-3',4',5'-trimethoxy-benzoate of formula (I) ##STR1## and acid addition salts thereof. According to another aspect of the invention there is provided a process for the preparation of these new compounds. Still another aspect of the invention is a pharmaceutical composition for treating psoriasis.
摘要:
The invention relates to new apovincaminol derivatives of the formula /I/ ##STR1## wherein R.sub.1 is hydrogen, nitro or halogen,R.sub.2 is a substituted or unsubstituted alkyl or phenyl group,R.sub.3 and R.sub.4 together form a valency bond or each independently represents hydrogen, hydroxyl or an --OR.sub.5 group, in whichR.sub.5 is substituted or unsubstituted alkanoyl or benzoyl group,with the proviso that if R.sub.2 stands for a 3,4,5-trimethoxyphenyl group and R.sub.1 is hydrogen, R.sub.3 and R.sub.4 together do not form a valency bond, or if R.sub.2 is a 3,4,5-trimethoxyphenyl group and R.sub.3 and R.sub.4 both are hydrogen, R.sub.1 is other than hydrogen, nitro or bromine, and acid addition salts thereof.The compounds may be used in the therapy of various skin diseases accompanied by a pathological cell proliferation, preferably psoriasis.
摘要:
The invention relates to novel 15-nitro-2.beta.,3.beta.-dihydro- and 15-nitro-2.beta.,3.beta.,6,7-tetrahydrotabersonine derivatives of the formula (I), ##STR1## wherein R.sup.1 stands for hydrogen;R.sup.2 stands for hydrogen or a C.sub.1-6 alkyl group; and the symbol represents a single or double bond as well as their salts.The invention further relates to pharmaceutical compositions containing the above compounds as well as a process for the preparation of the above compounds of formula (I) and of the pharmaceutical compositions.The compounds of formula (I) exert a reducing or inhibitory effect on cerebral edema and show antihypoxic properties. Thus, they are useful for the prevention or treatment of brain injuries of various origin induced by hypoxia of the brain.
摘要:
The invention relates to a new process for the preparation of 17,18-dehydro-apovincaminol-trimethoxy-benzoate of the formula (I) ##STR1## and acid addition salts thereof. According to the invention compound of the formula (I) is prepared starting from 17,18-dehydrovincamine of the formula (IIa) ##STR2## and/or 17,18-dehydro-epivincamine of formula (IIb) ##STR3## by reducing with a complex metal hydride, acylating the new hydroxy-vincaminol derivative obtained selectively with 3,4,5-trimethoxy-benzoic acid or a derivative thereof capable of acylation, optionally in the presence of a catalyst and/or an acid binding agent, and treating the corresponding acylated hydroxylderivative obtained with formic acid, in the presence of an acid chloride, and, if desired, converting the compound of formula (I) obtained into an acid addition salt thereof.
摘要:
The invention relates to pharmaceutical compositions with a neuroleptic action as well as to a process for preparing these compositions.The active ingredients of the compositions of the invention are 2-halo-6-methyl-9-ergolene derivatives of the formula (I), ##STR1## wherein X represents a chlorine, bromine or iodine atom as well as their acid addition salts.The compositions of the invention contain an effective dose of compound of the general formula (I) or an acid addition salt thereof.
摘要:
The invention relates to a novel process for the preparation of partially new 2-halonicergoline derivatives of the formula (I), ##STR1## wherein X stands for chlorine, bromine or iodine atom, as well as their acid addition salts.The process of the invention comprises esterifying a novel 2-halo-1-methyllumilysergol of the formula (II), ##STR2## wherein X is the same as defined above, or an acid addition salt thereof and, if desired, converting the thus-obtained 2-halonicergoline derivative of the formula (I) to an acid addition salt.The compounds of the invention improve the cognitive function of the brain and show an antihypoxic as well as a strong .alpha.-adrenerg blocking and calcium-antagonistic action.
摘要:
A novel process for preparing 10-bromo-vincaminic acid esters and homologous compounds of the general formula ##STR1## wherein R.sup.1 and R.sup.2 each stand for a C.sub.1-6 alkyl group is disclosed.All the intermediate products are new and exhibit valuable therapeutical effect on the blood circulation.
摘要:
New salts of the formula XIIIa and XIIIb are disclosed ##STR1## wherein R.sup.2, R.sup.3 and R.sup.5 are each C.sub.1 to C.sub.6 alkyl and A.sup.- is an anion of a pharmaceutically acceptable acid. Furthermore new compounds of the formula XIVa and XIVb are disclosed: ##STR2## wherein R.sup.2 and R.sup.3 are as defined above. The new salts and compounds are intermediates in the preparation of 10-bromo-vincaminic acid esters. In addition the new salts and compounds have the ability to increase blood circulation and to decrease blood flow resistance in an animal subject while at the same time maintaining a steady pulse rate and blood pressure.
摘要:
The invention is directed to 1-alkyl-9-bromohexagydro indoloquinolizium salts and a method for their use to increase blood circulation and decrease in blood vessel resistance.