Synthesis of chiral and achiral pyranenamine derivatives. Potent agents with topical ocular antiallergic activity
摘要:
The SS, RR and meso stereoisomers of pyranenamine SK&F 84210 (2) were synthesized stereospecifically starting from commercially available (R)-(-)- or (S)-(+)-2,2-dimethyl-1,3,dioxolane-4-methanol (3). In addition, two achiral pyranenamines 19 and 26 were also synthesized. When evaluated by intravenous and topical routes in the rat passive ocular anaphylaxis (POA) assay, (SS)- and meso-2 as well as achiral compounds 19 and 26 were found to be more potent antiallergic agents than (RR)-2.
Synthesis of chiral and achiral pyranenamine derivatives. Potent agents with topical ocular antiallergic activity
摘要:
The SS, RR and meso stereoisomers of pyranenamine SK&F 84210 (2) were synthesized stereospecifically starting from commercially available (R)-(-)- or (S)-(+)-2,2-dimethyl-1,3,dioxolane-4-methanol (3). In addition, two achiral pyranenamines 19 and 26 were also synthesized. When evaluated by intravenous and topical routes in the rat passive ocular anaphylaxis (POA) assay, (SS)- and meso-2 as well as achiral compounds 19 and 26 were found to be more potent antiallergic agents than (RR)-2.
Novel iodinated non-ionic triiodobenzene compounds and contrast media
申请人:Guerbet S.A.
公开号:US05043152A1
公开(公告)日:1991-08-27
The invention relates to novel non-ionic compounds of formula ##STR1## These compounds can be used as contrast media.
这项发明涉及公式为##STR1##的新型非离子化合物。这些化合物可以用作造影剂。
2H-pyran-2,6-(3H)-dione derivatives with anti-allergic activity
申请人:Allergan, Inc.
公开号:US04725620A1
公开(公告)日:1988-02-16
Achiral compounds of a 2H-pyran-2,6(3H)-dione derivative of the formula ##STR1## or a pharmaceutically acceptable salt thereof, where R is --(CH.sub.2).sub.m OH or --CH((CH.sub.2).sub.n CH.sub.2 OH).sub.2 where m is 1-5 and n is 0-4. These compounds are useful in the treatment of allergic conditions.
Method for the one-pot production of organo-iodinated compounds
申请人:GUERBET
公开号:US10836711B2
公开(公告)日:2020-11-17
The present invention concerns a process for the preparation of organo-iodized compounds, as well as their preparation intermediates. More particularly, the present invention concerns a process for the preparation of organo-iodized compounds which can be used as preparation intermediates in the synthesis of iodized contrast agents.