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The Royal Institution for the Advancement of Learning / Mcgill University

UniversitÈ Laval

Kelvin K Ogilvie

Youla S Tsantrizos

Alan K Watson

J Andre Fortin

Harry H Kope

Gabriel G Alvarado-Urbina

The invention relates to the isolation, characterization and application of a bioherbicide composition characterized by its phytotoxcity towards the agricultural pest Convolvulus arvensis (field bindweed) and the aquatic weed Lemna paucicostata. The composition consists of a compound of formula I: ##STR1## wherein R.sub.1 is selected from H and OH, and R.sub.2 is selected from --CH.sub.2 OH and --COOH, salts and esters thereof, in association with an agriculturally acceptable carrier. The herbicide of this invention can be used for the control of field binweed and potentially other pest plants.

Herbicidal metabolites of phomopsis convoluvulus for the effective

The invention relates to a biofungicidal composition characterized by its capacity to arrest the growth and/or destroy the cell wall of pathogenic fungi, comprises a composition of a compound of the formula I ##STR1## wherein R.sub.1 is selected from the group consisting of ##STR2## and R.sub.2 is --H or --OH and mixtures thereof in association with an inert carrier, and to a method for arresting the growth and/or destroying the cell wall of pathogenic fungi by applying thereto a biofungicidal amount of the composition of a compound of formula I in association with an inert carrier.

Biofungicidal composition

Compounds to general formula ##STR1## in which R and R' are hydrogen or benzyl and X represents a purine on pyrimidine base group selected from isoguanine, guanine, cytosine, 5-fluorouracil, S-methyl uracil (thymine) and chloroguanine, exhibit anti-viral properties.

Antiviral triazine compounds

Phosphorylated nucleotides for addition to nucleotide chains in the stepwise synthesis of oligonucleotides, e.g. as a polymeric support, are prepared in dioxane solvent and then lyophilized, to provide a stable, dry product ready for re-dissolving in reaction solvent. The lyophilized products are stable indefinitely and do not suffer from decreased reactivity.

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Canning, Canada

Kelvin K Ogilvie