摘要:
A process for conveniently and efficiently producing a highly pure cinnamaldehyde derivative, for example, (2E)-(3-hydroxy-4-methoxy)cinnamaldehyde, which comprises reacting a benzaldehyde derivative, such as isovanillin and the like, with acetaldehyde in the presence of an alkali, in particular preferably, dropping acetaldehyde little by little thereto in an aqueous solution at a low temperature for the reaction thereof. The cinnamaldehyde derivative thus obtained is selectively reduced to produce 3-(3-hydroxy-4-substituted (with methoxy group or the like)phenyl)propionaldehyde. Further, through a reductive alkylation reaction of the compound thus produced with an aspartame, N-[N-[3-(3-hydroxy-4-substituted (with methoxy group or the like)phenyl)propyl]-L-aspartyl]-L-phenylalanine 1-methyl ester, which is useful as a sweetener having a high sweetening potency, can be industrially and efficiently produced. The processes therefor are also provided.
摘要:
A process for conveniently and efficiently producing a highly pure cinnamaldehyde derivative, for example, (2E)-(3-hydroxy-4-methoxy)cinnamaldehyde, which comprises reacting a benzaldehyde derivative, such as isovanillin and the like, with acetaldehyde in the presence of an alkali, in particular preferably, dropping acetaldehyde little by little thereto in an aqueous solution at a low temperature for the reaction thereof. The cinnamaldehyde derivative thus obtained is selectively reduced to produce 3-(3-hydroxy-4-substituted (with methoxy group or the like)phenyl)propionaldehyde. Further, through a reductive alkylation reaction of the compound thus produced with an aspartame, N-[N-[3-(3-hydroxy-4-substituted (with methoxy group or the like)phenyl)propyl]-L-aspartyl]-L-phenylalanine 1-methyl ester, which is useful as a sweetener having a high sweetening potency, can be industrially and efficiently produced. The processes therefor are also provided.
摘要:
A process for conveniently and efficiently producing a highly pure cinnamaldehyde derivative, for example, (2E)-(3-hydroxy-4-methoxy)cinnamaldehyde, which comprises reacting a benzaldehyde derivative, such as isovanillin and the like, with acetaldehyde in the presence of an alkali, in particular preferably, dropping acetaldehyde little by little thereto in an aqueous solution at a low temperature for the reaction thereof. The cinnamaldehyde derivative thus obtained is selectively reduced to produce 3-(3-hydroxy-4-substituted (with methoxy group or the like)phenyl) propionaldehyde. Further, through a reductive alkylation reaction of the compound thus produced with an aspartame, N-[N-[3-(3-hydroxy-4-substituted (with methoxy group or the like)phenyl) propyl]-L-α-aspartyl]-L-phenylalanine 1-methyl ester, which is useful as a sweetener having a high sweetening potency, can be industrially and efficiently produced. The processes therefor are also provided.
摘要:
The present invention relates to processes of producing glutamic acid compounds, for example, monatin, which are useful as, for example, production intermediates for sweetener or pharmaceutical products.
摘要:
The present invention relates to processes of producing glutamic acid compounds, for example, monatin, which are useful as, for example, production intermediates for sweetener or pharmaceutical products.
摘要:
The present invention relates to processes of producing glutamic acid compounds, for example, monatin, which are useful as, for example, production intermediates for sweetener or pharmaceutical products.
摘要:
The present invention relates to processes of producing glutamic acid compounds, for example, monatin, which are useful as, for example, production intermediates for sweetener or pharmaceutical products.
摘要:
The present invention relates to processes of producing glutamic acid compounds, for example, monatin, which are useful as, for example, production intermediates for sweetener or pharmaceutical products.
摘要:
A process for producing efficiently glutamic acid derivatives (including salts thereof) such as monatin is described. This process entails converting a substituted α-keto acid of formula (1) into a glutamic acid derivative of formula (2) in the presence of an enzyme catalyzing conversion of the same.
摘要:
The present invention relates to a process for producing efficiently glutamic acid derivatives (including salts thereof) such as monatin by converting a substituted α-keto acid of formula (1) into a glutamic acid derivative of formula (2) in the presence of an enzyme catalyzing conversion of the same.