Noscapine-derived β-amino alcohols as new organocatalysts for enantioselective addition of diethylzinc to aldehydes
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Mohebbi, Maryam
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Shahid Beheshti Univ, Med Plants & Drugs Res Inst, Dept Phytochem, GC, Tehran 1983963113, IranShahid Beheshti Univ, Med Plants & Drugs Res Inst, Dept Phytochem, GC, Tehran 1983963113, Iran
Mohebbi, Maryam
[1
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Salehi, Peyman
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Bararjanian, Morteza
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Shahid Beheshti Univ, Med Plants & Drugs Res Inst, Dept Phytochem, GC, Tehran 1983963113, IranShahid Beheshti Univ, Med Plants & Drugs Res Inst, Dept Phytochem, GC, Tehran 1983963113, Iran
Bararjanian, Morteza
[1
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Ebrahimi, Samad N.
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Shahid Beheshti Univ, Med Plants & Drugs Res Inst, Dept Phytochem, GC, Tehran 1983963113, IranShahid Beheshti Univ, Med Plants & Drugs Res Inst, Dept Phytochem, GC, Tehran 1983963113, Iran
Ebrahimi, Samad N.
[1
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[1] Shahid Beheshti Univ, Med Plants & Drugs Res Inst, Dept Phytochem, GC, Tehran 1983963113, Iran
In this paper, synthesis of two derivatives of noscapine and their application as organocatalysts in the asymmetric addition of diethylzinc to aromatic aldehydes is reported. The first catalyst (2) was synthesized by the reduction of lactone ring of noscapine to form the corresponding diol, and the second one (3) was prepared by tert-butyl dimethyl silylation of the primary hydroxyl group of 2. Excellent yields and high ees up to 95% were obtained by using 3 as the catalyst. To the best of our knowledge, this is the first report on the application of lactone ring opened noscapinoid compounds as organocatalysts in asymmetric reactions.