http://pubs.acs.org/doi/abs/10.1021/ol101894h

http://pubs.acs.org/doi/abs/10.1021/ol1016178

http://pubs.acs.org/doi/abs/10.1021/ol101883g

http://pubs.acs.org/doi/abs/10.1021/ol101576q

http://pubs.acs.org/doi/abs/10.1021/ol101684u

http://pubs.acs.org/doi/abs/10.1021/jo1014917

http://pubs.acs.org/doi/abs/10.1021/jo101318u

http://pubs.acs.org/doi/abs/10.1021/jo1013993

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多谢！！