Regioselective Ring-Opening of Amino Acid-Derived Chiral Aziridines: an Easy Access to cis-2,5-Disubstituted Chiral Piperazines
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作者:
Samanta, Krishnananda
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Cent Drug Res Inst, Div Med & Proc Chem, Lucknow 226001, Uttar Pradesh, IndiaCent Drug Res Inst, Div Med & Proc Chem, Lucknow 226001, Uttar Pradesh, India
Samanta, Krishnananda
[1
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Panda, Gautam
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Cent Drug Res Inst, Div Med & Proc Chem, Lucknow 226001, Uttar Pradesh, IndiaCent Drug Res Inst, Div Med & Proc Chem, Lucknow 226001, Uttar Pradesh, India
Panda, Gautam
[1
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机构:
[1] Cent Drug Res Inst, Div Med & Proc Chem, Lucknow 226001, Uttar Pradesh, India
An efficient four-step synthetic strategy for cis-2,5-disubstituted chiral piperazines derived from amino-acid-based aziridines is described. The key steps in this strategy are the highly regioselective boron trifluoride diethyl etherate (BF3 center dot OEt2)-mediated ring-opening of less-reactive N-Ts chiral aziridines by alpha-amino acid methyl ester hydrochloride followed by Mitsunobu cyclization. This protocol has been used in an attempt to construct the piperazine core framework of natural product (+)-piperazinomycin.
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CSIR, Cent Drug Res Inst, Med & Proc Chem Div, Lucknow 226001, Uttar Pradesh, IndiaCSIR, Cent Drug Res Inst, Med & Proc Chem Div, Lucknow 226001, Uttar Pradesh, India
Bera, Saurav
Panda, Gautam
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CSIR, Cent Drug Res Inst, Med & Proc Chem Div, Lucknow 226001, Uttar Pradesh, IndiaCSIR, Cent Drug Res Inst, Med & Proc Chem Div, Lucknow 226001, Uttar Pradesh, India
机构:
Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R ChinaSun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R China
Zhu, Liping
Xiong, Jiale
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Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R ChinaSun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R China
Xiong, Jiale
An, Junkai
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Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem, Lanzhou 730000, Gansu, Peoples R ChinaSun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R China
An, Junkai
Chen, Nannan
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Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R ChinaSun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R China
Chen, Nannan
Xue, Jijun
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Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem, Lanzhou 730000, Gansu, Peoples R ChinaSun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R China
Xue, Jijun
Jiang, Xianxing
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Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R ChinaSun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R China