Bronchially effective xanthene-9-carboxylates

Drug – bio-affecting and body treating compositions – Nonspecific immunoeffector – per se ; or nonspecific... – Lipid or oil

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260335, 424274, 26032636, C07D31184

Patent

active

040483223

ABSTRACT:
The invention relates to new xanthene-9-carboxylates of the formula (I), ##STR1## wherein R.sub.1 and R.sub.3 are the same or different and each can represent a lower alkyl group,

REFERENCES:
patent: 2334310 (1943-11-01), Burtner
patent: 2512307 (1950-06-01), Clinton et al.
patent: 2659725 (1953-11-01), Cusic et al.
patent: 2659732 (1953-11-01), Cusic et al.
patent: 3133937 (1964-05-01), Davis
J. W. Cusic et al., Jour. Org. Chem., vol. 16, (1951), pp. 1921-1930.

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