FIELD: chemistry of isomers. SUBSTANCE: present invention describes heterocyclylmethyl chroman of general formula (I): wherein A, B and D are independently hydrogen atoms or lower alkyl. Het represents heterocyclic residue of formula: wherein R1 is hydrogenation; R2 is linear or branched alkyl containing 1-8 carbon atoms which is substituted by residue of formula: or residue of formula: as mixture of isomers or individual isomers or salts thereof. EFFECT: improved properties.
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Authors
Dates
1997-09-10—Published
1992-12-08—Filed