摘要:
Novel polymers having a linear backbone which is free from both branching and cross-linking, comprising either tertiary or quaternized nitrogen atoms linked to each other through ethylene groups. These polymers are useful as antimicrobials, flocculating agents, antistatic agents, electroconductive agents for coating paper, chelating agents and bile acid binding agents, as well as in similar applications where their high charge to weight ratio and fully accessible nitrogen atoms can be employed. The polymers are obtained by the polymerization of an oxazoline, hydrolysis or direct reduction, nitrogen substitution, and optional quaternization of the resulting polymer.
摘要:
Novel polymers having a linear backbone which is free from both branching and cross-linking, comprising quaternized nitrogen atoms linked to each other through trimethylene groups. By the term "linear backbone" is meant that the polymer has only acyclic groups, i. e. trimethylene, linking the nitrogen atoms in a single continuous chain; the polymer is free from "branching" when it has no repeating monomer units extending from the polymer backbone; and it is free from "cross-linking" when there is no joining of two linear backbones. These polymers are useful as antimicrobials, flocculating agents, antistatic agents, electroconductive agents for coating paper, chelating agents and bile acid binding agents, as well as in similar applications where their high charge to weight ratio and fully accessible nitrogen atoms can be employed. The polymers are obtained by the polymerization of dihydro-oxazine, reductive alkylation of the resulting polymer, followed by quaternization.
摘要:
Novel polymers having a linear backbone which is free from both branching and cross-linking, comprising quaternized nitrogen atoms linked to each other through trimethylene groups. By the term "linear backbone" is meant that the polymer has only acyclic groups, i.e. trimethylene, linking the nitrogen atoms in a single continuous chain; the polymer is free from "branching" when it has no repeating monomer units extending from the polymer backbone; and it is free from "cross-linking" when there is no joining of two linear backbones. These polymers are useful as antimicrobials, flocculating agents, antistatic agents, electroconductive agents for coating paper, chelating agents and bile acid binding agents, as well as in similar applications where their high charge to weight ratio and fully accessible nitrogen atoms can be employed. The polymers are obtained by the polymerization of dihydro-oxazine, reductive alkylation of the resulting polymer, followed by quaternization.
摘要:
Novel polymers having a linear backbone which is free from both branching and cross-linking, comprising quaternized nitrogen atoms linked to each other through trimethylene groups. By the term "linear backbone" is meant that the polymer has only acyclic groups, i.e. trimethylene, linking the nitrogen atoms in a single continuous chain; the polymer is free from "branching" when it has no repeating monomer units extending from the polymer backbone; and it is free from "cross-linking" when there is no joining of two linear backbones. These polymers are useful as antimicrobials, flocculating agents, antistatic agents, electroconductive agents for coating paper, chelating agents and bile acid binding agents, as well as in similar applications where their high charge to weight ratio and fully accessible nitrogen atoms can be employed. The polymers are obtained by the polymerization of dihydro-oxazine, reductive alkylation of the resulting polymer, followed by quaternization.
摘要:
Novel derivatives of 3,6-bis(2-piperidinyl)-2,5-piperazinedione and processes for preparing the same. The new compounds exhibit activity in inhibiting the growth of tumors in mammals and birds, and in inhibiting the growth of certain microorganisms.
摘要:
The invention disclosed herein relates to novel partially cross-linked, fully quaternized poly-[(methylimino)trimethylene] polymers wherein a minor proportion (1% to 20%) of the nitrogen atoms in adjacent poly-[(methylimino)trimethylene] linear chains are, by quaternization, joined through trimethylene or 2-hydroxy-trimethylene bridges, the non-cross-linked nitrogens in the said linear chains being fully quaternized with lower alkyl or trialkylammoniopropyl groupings; and to the novel process for preparing these partially cross-linked, fully quaternized polymers which comprises reacting poly-[(methylimino)trimethylene] with 0.01 to 0.2 equivalents of 1,3-dihalo-propane or 1,3-dihalo-2-hydroxypropane per equivalent of tertiary amine in said poly-[(methylimino)trimethylene], and subsequently reacting the resulting product with excess alkyl halide or 3-halopropyltrialkylammonium halide. These partially cross-linked fully quaternized poly-[(methylimino) trimethylene] polymers are useful as highly-efficient bile acid sequestrants.
摘要:
Novel linear, unbranched, non-cross-linked polymers particularly poly-[{methyl-(3-trimethylammoniopropyl)imino} trimethylene dihalide] are prepared by the polymerization of the novel monomer, 3-[N'-(3-halopropyl)-N'-methylamino]-N,N,N-trimethyl-l-propanaminium halide, or an acid addition salt thereof preferably in an oxygen excluded environment, e.g., under nitrogen or argon. The polymer, especially after modification of terminal groups, is an excellent oral anticholesterolemic.
摘要:
Hexa- and heptapeptides of formula W-[X-Pro-Phe-Phe-Y-Z].sub.n H prepared by standard synthetic peptide techniques are anti-inflammatory, anti-rheumatoid arthritic and anti-ulcer agents.
摘要:
Tricyclic derivatives of substituted pyrrole acids, e.g., substituted 4,10-dihydro-10-oxo-1H-[1]benzoxepino[4,3-b]pyrrole-2-acetic acids or the 5-thia analogs thereof have been prepared via hydrolysis of a precursor or decarboxylation of a precursor-diacid. These tricyclic compounds are found to have high analgesic and anti-inflammatory activities but low ulcerogenic side effects.
摘要:
Mercaptoalkylpyridines carrying an ethenyl or ethynyl substituent are prepared from known pyridine compounds, principally pyridoxine, by known chemical procedures, and are useful in the treatment of rheumatoid arthritis and related inflammatory diseases.