Abstract:
This invention discloses diterpenes class of novel compounds of general formula I from a novel source. More particularly the invention relates to extracts/fractions containing pimarane diterpenes from Anisochillus (Lamiaceae), useful for prevention, treatment, inhibition or controlling growth and proliferation of mycobacterial activity in mammals. The invention further relates to extracts, fractions standardized to diterpenes class of novel compounds useful for the treatment of cancers.
Abstract:
The present invention relates to the preparation of oxovinylionol and its O-protected derivatives of the formula I in which R is hydrogen or an OH protecting group, for example a group Si(Ra)3, by reacting a compound of the general formula II in which R has the meanings given above for formula I, i.e. β-vinyl ionol (formula II, R=hydrogen) or an O-protected derivative thereof (formula II, R═OH protecting group) with an oxidant in the presence of at least one transition metal, where the oxidant comprises at least one oxygen-containing compound which is selected from among hydrogen peroxide and organic hydroperoxides.
Abstract:
Novel unsaturated peroxides useful as molecular weight regulators in polymerization reactions are disclosed. Also disclosed are a polymerization process employing these novel unsaturated peroxides as molecular weight regulators, polymers and oligomers made by this process and articles of manufacture comprising one or more polymers or oligomers made by this process. These molecular weight regulating peroxides provide the ability to introduce an epoxy functionality to the oligomer or polymer as well as an additional functionality. Further, omega (di) substituted or alpha, omega disubstituted polymers may be synthesized using the unsaturated peroxides of the present invention.
Abstract:
In the photooxidation of terpene olefins, fewer by-products and higher conversion rates are obtained if a very high irradiation intensity is chosen.
Abstract:
The peroxides which include the O.sup.17 isotope, especially the hydrogen peroxides and peroxides and hydroperoxides prepared therefrom, are well adapted as nonradioactive labeled compounds for use in the medicinal and biological arts.
Abstract:
A novel class of compounds having the formula ##STR1## where Z is a substituted carbonate or carbamate, D is an alkynyl or an alkyl, and the R's may be alkyl.
Abstract:
Terpene peroxides of formula: ##STR1## in which R denotes a tertiary alkyl radical substituted, if desired, by one or more phenyl radicals, a cycloalkyl radical or a trialkylsilyl radical, R.sub.1, R.sub.2 and R.sub.3, which are identical or different, each denote hydrogen or an aliphatic radical optionally containing one or more double or triple bonds and optionally substituted, and R.sub.4 denotes an aliphatic radical optionally containing one or more double or triple bonds and optionally substituted or R.sub.3 denotes hydrogen and R.sub.2 and R.sub.4 together form an alkylene radical which may be substituted by one or more methyl radicals, are obtained by reaction of a hydroperoxide of formula R--OOH with a compound of formula: ##STR2## the operation being carried out in a basic aprotic solvent.
Abstract:
Novel peroxide compounds and the use thereof. In particular, the present invention concerns .beta.-hydroxycyclopentylperoxide compounds of the general formula: ##STR1## wherein R.sub.1 represents hydrogen or an organic residue of 1 to 9 carbon atoms. These novel peroxide compounds are useful as an intermediate in the production of glutaraldehydes.
Abstract:
Compounds containing at least one keto group and at least one peroxy group, each peroxy oxygen being joined to a tertiary carbon atom.Examples: 2-Methyl-2-(t-butylperoxy)-4-pentanone. 2,6-Dimethyl-2,6-bis(t-butylperoxy)-4-heptanone. 3,5,5-Trimethyl-3-(t-butylperoxy)cyclohexanone.The compounds are prepared by the strong acid catalyzed addition of a tertiary hydroperoxide to an .alpha.,.beta.-unsaturated ketone. Illustration: Mesityl oxide and pinanyl hydroperoxide, in slight excess, were reacted at 0.degree. C. in the presence of 77% sulfuric acid; the reaction mix was stirred for 16 hours at 25.degree. C. Product 2-methyl-2-pinanylperoxy-4-pentanone was recovered.