Process for preparing antiparasitic agents
US5702924A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1991 |
| Grant date | Dec 30, 1997 |
| Priority date | — |
| Expiry date | Jan 25, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/886
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Compounds of the formula: ##STR1## wherein X represents a single or a double bond; R.sup.1 is H or OH; provided that when X is a single bond, R.sup.1 is H or OH, and when X is a double bond, R.sup.1 is absent; PA1 R.sup.2 is H, C.sub.1 -C.sub.8 alkyl, C.sub.2 -C.sub.8 alkenyl, C.sub.2 -C.sub.8 alkynyl, alkoxy-alkyl or alkylthioalkyl containing from 1 to 6 carbon atoms in each alkyl or alkoxy group, wherein any of said alkyl, alkoxy alkenyl or alkynyl groups may be substituted by one or more halo atoms; or a C.sub.3 -C.sub.8 cycloalkyl or C.sub.5 -C.sub.8 cycloalkenyl group, either of which may be substituted by methylene or one or more C.sub.1 -C.sub.4 alkyl groups or halo atoms; or a 3 to 6 membered oxygen or sulphur containing heterocyclic ring which may be saturated, or fully or partially unsaturated and which may be substituted by one or more C.sub.1 -C.sub.4 alkyl groups or halo atoms; or a group of the formula SR.sup.5 wherein R.sup.5 is C.sub.1 -C.sub.8 alkyl, C.sub.2 -C.sub.8 alkenyl, C.sub.2 -C.sub.8 alkynyl, C.sub.3 -C.sub.8 cycloalkyl, C.sub.5 -C.sub.8 cycloalkenyl, phenyl or substituted phenyl wherein the substituent is C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.