Process and antiparasitic intermediates for doramectin

PCT No. PCT/IB94/00283 Sec. 371 Date Mar. 8, 1996 Sec. 102(e) Date Mar. 8, 1996 PCT Filed Sep. 19, 1994 PCT Pub. No. WO95/09863 PCT Pub. Date Apr. 13, 1995Intermediates and a process for preparing doramectin, the compound of formula (I), semisynthetically from by-product in the fermentation procedur...

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Hauptverfasser:	GIBSON, STEPHEN, P, DEMERS NEIL, CRAWFORD, THOMAS, C
Format:	Patent
Sprache:	eng
Schlagworte:	AGRICULTURE ANIMAL HUSBANDRY BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES CHEMISTRY DERIVATIVES THEREOF FISHING FORESTRY HUMAN NECESSITIES HUNTING HYGIENE MEDICAL OR VETERINARY SCIENCE METALLURGY NUCLEIC ACIDS NUCLEOSIDES NUCLEOTIDES ORGANIC CHEMISTRY PEST REPELLANTS OR ATTRACTANTS PLANT GROWTH REGULATORS PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS SUGARS TRAPPING
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Zusammenfassung:	PCT No. PCT/IB94/00283 Sec. 371 Date Mar. 8, 1996 Sec. 102(e) Date Mar. 8, 1996 PCT Filed Sep. 19, 1994 PCT Pub. No. WO95/09863 PCT Pub. Date Apr. 13, 1995Intermediates and a process for preparing doramectin, the compound of formula (I), semisynthetically from by-product in the fermentation procedure which also yields the compound of formula (I). The intermediates prepared by the process of this invention also have utility as antiparasitic agents. The process of this invention utilizes continuous reaction inert gas sparging during the pyrolysis step, resulting in a significant improvement in the overall yield of this conversion. (I)