Biocatalytic asymmetric formation of tetrahydro-β-carbolines.

Biocatalytic asymmetric formation of tetrahydro-β-carbolines.
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DOI:
10.1016/j.tetlet.2010.06.075
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发表时间:
2010-08-18
影响因子:
1.8
通讯作者:
O'Connor, Sarah E.
O'Connor, Sarah E.
中科院分区:
化学4区
文献类型:
--
作者:
Bernhardt, Peter;Usera, Aimee R.;O'Connor, Sarah E.

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Strictosidine synthase triggers the formation of strictosidine from tryptamine and secologanin, thereby generating a carbon-carbon bond and a new stereogenic center. Strictosidine contains a tetrahydro-β-carboline moiety − an important N-heterocyclic framework found in a range of natural products and synthetic pharmaceuticals. Stereoselective methods to produce tetrahydro-β-carboline enantiomers are greatly valued. We report that strictosidine synthase from Ophiorrhiza pumila utilizes a range of simple achiral aldehydes and substituted tryptamines to form highly enantioenriched (ee >98%) tetrahydro-β-carbolines via a Pictet-Spengler reaction. This is the first example of aldehyde substrate promiscuity in the strictosidine synthase family of enzymes and represents a first step towards developing a general biocatalytic strategy to access chiral tetrahydro-β-carbolines.
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