Organic Letters (2007) - Comment
pubmed: 17217304  doi: 10.1021/ol0628816  issn: 1523-7060  issn: 1523-7052 

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Hideaki Watanabe, Masashi Takano, Akinori Umino, Toshiya Ito, Hiroyuki Ishikawa, Masahisa Nakada