A solid form of (−)-Ambrox formed by a bioconversion process.

The invention provides an improved method of isolating the 3-(E)-isomer of an unsaturated carboxylic acid from a mixture of corresponding (E/Z)isomers. More particularly, the present invention relates to an improved method for the biocatalytic preparation of (3E,7E)-homofarnesylic acid; as well as a novel biocatalytic method for the improved preparation of homofarnesol, in particular of (3E,7E)-homofarnesol and homofarnesol preparations having an increased content of (3E,7E)-homofarnesol. The present invention also relates to methods of preparing(−)-ambroxby applying (3E,7E)-homofarnesylic acid or (3E,7E)-homofarnesol as obtained according to the invention as starting material.

The present invention relates to processes for the preparation of sclareolide and related compounds by the biocatalytic cyclization of polyunsaturated carboxylic acid compounds, in particular of homofarnesylic acid and related compounds; and to a process for the preparation of ambroxide via the biocatalytic cyclization of homofarnesylic acid to sclareolide.

A solid form of ()-Ambrox formed by a bioconversion process.

A Squalene Hopene Cyclase (SHC) isolated from Gluconobacter morbifer is provided as are variants and a method for using the G. morbifer SHC to biocatalytically convert homofarnesol to ambroxan.

A solid form of ()-Ambrox formed by a bioconversion process.

A process of purification of a homoallylic alcohol by distillation in the presence of a base, wherein the homoallylic alcohol is E,E-homofarnesol.

A process of purification of a homoallylic alcohol by distillation in the presence of a base, wherein the homoallylic alcohol is E,E-homofarnesol.

The present invention relates to novel mutants with cyclase activity and use thereof in a method for biocatalytic cyclization of terpenes, such as in particular for the production of isopulegol by cyclization of citronellal; a method for the preparation of menthol and methods for the biocatalytic conversion of further compounds with structural motifs similar to terpene.

Enzyme mutant with squalene-hopene-cyclase activity, selected from mutants of a wild-type enzyme comprising an amino acid sequence selected from SEQ-ID No: 1 to 3 or an amino acid sequence derived therefrom with a degree of sequence identity in the range of from 60 to 99.9% of SEQ-ID No. 1 to 3, wherein the mutant catalyzes a one-step monocyclization reaction to produce products such as gamma-dihydroionone and/or alpha-dihydroionone.