This disclosure is related to methods for producing anhydroryanodol, ryanodol, or analogues thereof and novel compounds prepared thereby.

This disclosure is related to methods for producing anhydroryanodol, ryanodol, or analogues thereof and novel compounds prepared thereby.

This disclosure is related to methods for producing anhydroryanodol, ryanodol, or analogs thereof and novel compounds prepared thereby.

This disclosure is related to methods for producing anhydroryanodol, ryanodol, or analogs thereof and novel compounds prepared thereby.

This disclosure is related to methods for producing anhydroryanodol, ryanodol, or analogues thereof and novel compounds prepared thereby.

The invention relates to processes for preparing carbaprostacyclin analogues and intermediates prepared from the processes. The invention also relates to cyclopentenone intermediates in racemic or optically active form.

The invention relates to processes for preparing carbaprostacyclin analogues and intermediates prepared from the processes. The invention also relates to cyclopentenone intermediates in racemic or optically active form.

A method for preparing a hop acid mixture having an enantiomeric excess of a (+)-tetrahydro--acid is disclosed. In the method, a racemate of a tetrahydro--acid is contacted with an amine to form a precipitate having an enantiomeric excess of the (+)-tetrahydro--acid. A method for preparing a hop acid is also disclosed. In the method, a racemate of a tetrahydro--acid is contacted with an amine to form a precipitate comprising a (+)-tetrahydro--acid, and the (+)-tetrahydro--acid is isomerized to a hop acid selected from the group consisting of (+)-trans-tetrahydro-iso--acids, ()-cis-tetrahydro-iso--acids, and mixtures thereof, and reduced to (+)-trans-hexahydroiso--acids and ()-cis-hexahydroiso--acids. An additive for flavoring a malt beverage is also disclosed. The additive includes a bittering agent selected from the group consisting of (+)-trans-tetrahydro-iso--acids, ()-cis-tetrahydro-iso--acids, (+)-trans-hexahydroiso--acids, ()-cis-hexahydroiso--acids, and mixtures thereof.

A method for preparing a hop acid mixture having an enantiomeric excess of a (+)-tetrahydro--acid is disclosed. In the method, a racemate of a tetrahydro--acid is contacted with an amine to form a precipitate having an enantiomeric excess of the (+)-tetrahydro--acid. A method for preparing a hop acid is also disclosed. In the method, a racemate of a tetrahydro--acid is contacted with an amine to form a precipitate comprising a (+)-tetrahydro--acid, and the (+)-tetrahydro--acid is isomerized to a hop acid selected from the group consisting of (+)-trans-tetrahydro-iso--acids, ()-cis-tetrahydro-iso--acids, and mixtures thereof, and reduced to (+)-trans-hexahydroiso--acids and ()-cis-hexahydroiso--acids. An additive for flavoring a malt beverage is also disclosed. The additive includes a bittering agent selected from the group consisting of (+)-trans-tetrahydro-iso--acids, ()-cis-tetrahydro-iso--acids, (+)-trans-hexahydroiso--acids, ()-cis-hexahydroiso--acids, and mixtures thereof.

The invention relates to processes for preparing carbaprostacyclin analogues and intermediates prepared from the processes. The invention also relates to cyclopentenone intermediates in racemic or optically active form.