[EN] COMPOSITIONS AND METHODS FOR MAKING NOSCAPINE AND SYNTHESIS INTERMEDIATES THEREOF [FR] COMPOSITIONS ET PROCÉDÉS DE FABRICATION DE NOSCAPINE ET D'INTERMÉDIAIRES DE SYNTHÈSE DE CELLE-CI
[EN] COMPOSITIONS AND METHODS FOR MAKING NOSCAPINE AND SYNTHESIS INTERMEDIATES THEREOF [FR] COMPOSITIONS ET PROCÉDÉS DE FABRICATION DE NOSCAPINE ET D'INTERMÉDIAIRES DE SYNTHÈSE DE CELLE-CI
Abstract Papaver fugax produced the newalkaloids (−)-narcotinehemiacetal and (−)-papaveroxine. Newalkaloidsfrom P . pseudo - orientale are (−)-narcotinediol, (+)-macrantaldehyde, (−)-papaveroxinoline, (−)-narcotolinol and (−)-narcotinehemiacetal.
摘要 一株罂粟产生了新的生物碱 (-)-narcotinehemiaacetal 和 (-)-罂粟碱。来自 P 的新生物碱。假东方香糖是 (-)-narcotinediol、(+)-macrantaldehyde、(-)-papaveroxinoline、(-)-narcotolinol 和 (-)-narcotineheemiaacetal。
Acetylation serves as a protective group in noscapine biosynthesis in opium poppy
作者:Thu-Thuy T Dang、Xue Chen、Peter J Facchini
DOI:10.1038/nchembio.1717
日期:2015.2
Characterization of four enzymes involved in biosynthesis of the plant metabolite and anticancer agent noscapine completes this pathway and identifies an unusual acetyl protecting group strategy that defines the order of enzymatic steps. We have characterized four sequential enzymes that transform 1-hydroxy-N-methylcanadine to narcotoline hemiacetal, completing our elucidation of noscapine biosynthesis in opium poppy. Two cytochromes P450 catalyze hydroxylations at C13 and C8 on the protoberberine scaffold, the latter step inducing ring opening and the formation of an aldehyde moiety. Acetylation at C13 before C8 hydroxylation introduces a protective group subsequently hydrolyzed by a carboxylesterase, which triggers rearrangement to a cyclic hemiacetal.
Heterodimeric <i>O</i>
-methyltransferases involved in the biosynthesis of noscapine in opium poppy
作者:Myung R. Park、Xue Chen、Dean E. Lang、Kenneth K.S. Ng、Peter J. Facchini
DOI:10.1111/tpj.13947
日期:2018.7
undergoes ester hydrolysis subsequent to 4ʹ‐O‐methylation leading to the formation of narcotine hemiacetal. In the absence of 4ʹ‐O‐methylation, a parallel pathway yields narcotoline hemiacetal. Dehydrogenation produces noscapine and narcotoline from the corresponding hemiacetals. Phthalide isoquinolineintermediates with a 4ʹ‐hydroxyl (i.e. narcotoline and narcotoline hemiacetal), or the corresponding
[EN] COMPOSITIONS AND METHODS FOR MAKING NOSCAPINE AND SYNTHESIS INTERMEDIATES THEREOF<br/>[FR] COMPOSITIONS ET PROCÉDÉS DE FABRICATION DE NOSCAPINE ET D'INTERMÉDIAIRES DE SYNTHÈSE DE CELLE-CI
申请人:EPIMERON INC
公开号:WO2015021561A1
公开(公告)日:2015-02-19
Methods for the manufacture of the therapeutic chemical compound noscapine and noscapine synthesis intermediates comprising contacting a noscapine pathway precursor selected from a first canadine derivative, a first papaveroxine derivative and narcotine hemiacetal with at least one of the enzymes selected from the group CYP82Y1, CYP82X1, AT1, CYP82X2, OMT, CXE1 and NOS.