Search Results - "Nii, Keiji"

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  1. 1

    Acid-Catalyzed Reactions of Sarcophytoxide, a Marine Cembranoid: An Apparently Enantio-Directive Reaction, Unusual Products and Stereochemical Reconsideration of Epoxide–Ketone Rearrangement by Nii, Keiji, Tagami, Keiko, Kijima, Masaru, Munakata, Tatsuo, Ooi, Takashi, Kusumi, Takenori

    “…Perchloric acid treatment of sarcophytoxide, a marine cembranoid possessing an epoxide, brought about epoxide–ketone rearrangement affording ketones. When the…”
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    Journal Article
  2. 2

    Unusual Transannular Cyclization Products of Sarcophytoxide, a 14-Membered Marine Cembranoid:  Anomalous Stereochemistry of Epoxide−Ketone Rearrangement by Nii, Keiji, Tagami, Keiko, Matsuoka, Keisuke, Munakata, Tatsuo, Ooi, Takashi, Kusumi, Takenori

    Published in Organic letters (06-07-2006)
    “…Treatment of sarcophytoxide with trimethylsilyl trifluoromethanesulfonate afforded an aromatic ketone as an unusual cyclization product. The modified Mosher's…”
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    Journal Article
  3. 3

    Broadly Applicable and Comprehensive Synthetic Method for N‑Alkyl-Rich Drug-like Cyclic Peptides by Nomura, Kenichi, Hashimoto, Satoshi, Takeyama, Ryuuichi, Tamiya, Minoru, Kato, Tatsuya, Muraoka, Terushige, Kage, Mirai, Nii, Keiji, Kotake, Kenichiro, Iida, Satomi, Emura, Takashi, Tanada, Mikimasa, Iikura, Hitoshi

    Published in Journal of medicinal chemistry (13-10-2022)
    “…We report a versatile and durable method for synthesizing highly N-alkylated drug-like cyclic peptides. This is the first reported method for synthesizing such…”
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  6. 6

    Acid-Catalyzed Reactions of Sarcophytoxide, a Marine Cembranoid by Nii, Keiji, Tagami, Keiko, Kijima, Masaru, Munakata, Tatsuo, Ooi, Takashi, Kusumi, Takenori

    Published in Bulletin of the Chemical Society of Japan (01-05-2008)
    “…Perchloric acid treatment of sarcophytoxide, a marine cembranoid possessing an epoxide, brought about epoxide-ketone rearrangement affording ketones. When the…”
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    Journal Article