Aziridine derivatives and their preparation methods

Details Aziridine derivatives and their preparation methods Aziridine derivatives and their preparation methods

2006-05-23

2006-05-23

Saeed, Kamal A. (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

07049447

ABSTRACT:
The present invention relates to a new aziridine derivative that is represented herein by general chemical formulae (Ia) or (Ib), and to their preparation method. In the said chemical formulae, R2and R3can be the same or different, and they are hydrogen, low-quality alkyl or cycloalkyl respectively; R4can be selected among hydrogen, alkyl, aryl, or amino protective group; and amino protective group is, for example, (Ph)3C, and FMOC(9-fluorenylmethyloxycarbonyl), alkoxycarbonyl, aryloxycarbonyl, aralkyloxycarbonyl and R5CO, R5SO2where R5is alkyl, aryl or aralkyl.

REFERENCES:
patent: P2001-0018263 (2003-03-01), None
patent: WO 01/12599 (2001-02-01), None
Ichimura, “Synthese der Epimizoucke,” Bull. Chem. Soc. Japan, (1970) vol. 43, pp. 2501-2506.
Kang & Ryu, “A Stereoselective Synthesis of syn-B-Amino Alcohols via iodocyclization,” Bull. Korean Chem. Soc. (1996) vol. 17, No. 3, p. 220.
Shao et al., “A New Asymmetric Synthesis of alpha-Methylcysteines via Chiral Aziridines,” J. Org. Chem. (1995) vol. 60, No. 4. pp. 790-791.
Kang, Sung Ho et al., “A Stereoselective Synthesis of syn-β-Amino Alcohols via Iodocyclization,” Bull. Korean Chem. Soc., 1996, vol. 17, No. 3, pp. 219-221.
Ichimura, Kunihiro, “Synthese der Epiminozucker,” Bull. of the Chem. Soc. of Japan, Aug. 1970, vol. 43, pp. 2501-2506.
Shao, Hui et al., “A New Asymmetric Synthesis of α-Methylcysteines via Chiral Aziridines,” J. Org. Chem., 1995, vol. 60, No. 4, pp. 790-791.

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