Precursors for fragrant ketones and fragrant aldehydes
申请人:Givaudan SA
公开号:EP1262473A1
公开(公告)日:2002-12-04
The present invention refers to fragrance precursors of formula I
for a fragrant ketone of formula II
and one or more fragrant aldehydes or ketones of formula III and IV,
These fragrance precursors are useful in perfumery, especially in the fine and functional perfumery.
The invention is directed to the field of pro-fragrances used in detergents and cleaning agents, cosmetic agents and air fresheners, for example. The invention relates to particular cyclic ketals used as pro-fragrances. The invention also relates to detergents and cleaning agents, cosmetic agents and air fresheners containing ketals of the type. The invention further relates to a method for creating a long-lasting fragrance on surfaces and for repelling insects.
The beta,gamma-unsaturated delta-keto esters of formula I are useful as precursors for the delivery of organoleptic compounds, especially for flavours, fragrances and masking agents, and/or of antimicrobial compounds.
The present invention relates to compounds with protected hydroxy groups of formula (I)
1
These compounds are precursors for organoleptic agents, such as fragrances, and masking agents and for antimicrobial agents. When activated, the compounds of formula (I) are cleaved and form one or more organoleptic and/or antimicrobial compounds.
PRODRUG COMPRISING BETA-KETO CARBOXYLIC ACID, BETA-KETO CARBOXYLIC ACID SALT OR BETA-KETO CARBOXYLIC ACID ESTER FOR DRUG DELIVERY
申请人:Andersson Martin
公开号:US20120065179A1
公开(公告)日:2012-03-15
There is provided a prodrug of a pharmaceutically active agent, such prodrug comprising a beta-keto carboxylic acid, a beta-keto carboxylic acid salt or a beta-keto carboxylic acid ester functional group, a pharmaceutical composition comprising the prodrug, and to the use of the prodrug or composition for treatment of a mammalian subject suffering from a condition which can be cured or alleviated by administration of the pharmaceutically active agent. There is further provided a method of inhibiting decarboxylation of a compound comprising a beta-keto carboxylic acid or a salt thereof with a monovalent cation, characterized in that a dry salt of the beta-keto carboxylic acid with a divalent or polyvalent cation is prepared.