Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ankerfarm SpafiledCriticalAnkerfarm Spa
Priority to BE138034ApriorityCriticalpatent/BE807654A/fr
Publication of BE807654ApublicationCriticalpatent/BE807654A/fr
C07D493/00—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system
C07D493/02—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system in which the condensed system contains two hetero rings
C07D493/04—Ortho-condensed systems
Landscapes
Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
Pharmaceuticals Containing Other Organic And Inorganic Compounds
(AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
BE138034A1973-11-221973-11-22Procede de preparation d'alpha-6- desoxytetracyclines
BE807654A
(fr)
Systeme de regulation de la recirculation des gaz d'echappement par l'entremise de la pression produite par une pompe d'air et de la depression du collecteur d'un moteur