Straightforward conversion of (+)-6,8-dimethoxy-3,4-dihydro-3- undecylisocoumarin (3) to the title isocoumarin was carried out. Hydrolytic ring opening of (3) afforded the hydroxy acid (4) which was immediately oxidized to keto acid (5) using chromic acid, Cyclodehydration of (5) afforded the 6,8- dimethoxy-3-undecylisocoumarin (6) which on selective demethylation of 8- methoxy group furni...

Despite the fact that waterjets have become relatively extensively used for industrial cleaning, and are beginning to find increasing use in mining and civil excavation, little is reported on the risks associated with the use of this new tool to the operator. Regulations on the use of waterjets do not indicate an awareness of the relatively low pressures necessary to inject fluid under the skin...

April 7 is known as “World Health Day” and one of the main responsibilities of World Health Organization is to improve the knowledge of the world population in order to prevent various diseases(1). This organization selects an illness or a disorder in terms of a unique slogan in order to plan for educational, prevention, curative and re-strengthening the operation of countries aroun...