Method for preparing p-mentha-8-thiol-3-one
AssigneeNederlandse Organisatie Voor Toegepast-Natuurwetenschappe Lijk Onderzoektno
InventorsAntonius Kerkenaar, Diederik J. M. Schmedding, Jan Berg
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Abstract
Method for preparing thiol compounds by coupling cysteine having the formula HS--CH.sub.2 --CH(NH.sub.2)COOH via and --S-- bridge to a hydrocarbon compound and subsequently reacting the cysteine conjugate obtained with .beta.-lyase to form the relevant thiol compounds. For instance it is possible to prepare the flavor p-mentha-8-thiol-3-one starting from pulegone as illustrated in the diagram below: ##STR1##
Claims2
A method for preparing thiol compounds comprising reacting cysteine non-enzymatically with pulegone to form a cysteine conjugate compound, subsequently reacting the cysteine conjugate so obtained with .beta.-lyase selected from the group consisting of Eubacterium limosum, Fusobacterium necrophorum and Fusobacterium varium .beta.-lyases to form p-mentha-8-thiol-3-one and recovering said p-mentha-8-thiol-3-one.
A method for preparing thiol compounds comprising reacting cysteine non-enzymatically with pulegone to form a cysteine conjugate compound, subsequently reacting the cysteine conjugate so obtained with Eubacterium limosum .beta.-lyase to form p-mentha-8-thiol-3-one.
Dependencies are inferred from the claim text.