Two new pyranoxanthones from the stem bark of Calophyllum pseudomolle P.F. Stevens

• Main Authors: Mulyadi Tanjung, Tjitjik Srie Tjahjandarie, Ratih Dewi Saputri, Muhammad Fajar Aldin, Hery Purnobasuki
• 格式: Article PeerReviewed
• 語言: English; English; English; English
• 出版: Taylor & Francis 2020
• 主題: Q Science; QD Chemistry
• 在線閱讀: http://repository.unair.ac.id/105807/2/C02.%20Fulltext_Two%20new%20pyranoxanthones%20from.pdf; http://repository.unair.ac.id/105807/4/C02.%20Validasi%20dan%20Penilaian.pdf; http://repository.unair.ac.id/105807/3/C02.%20Similarity_Two%20new%20pyranoxanthones.pdf; http://repository.unair.ac.id/105807/1/C02_Korespondensi.pdf; http://repository.unair.ac.id/105807/; https://www.tandfonline.com/doi/abs/10.1080/14786419.2020.1808638?journalCode=gnpl20; https://doi.org/10.1080/14786419.2020.1808638
• 機構: Universitas Airlangga

Two new pyranoxanthones, calotetrapterins D (1) and E (2), were isolated from the stem bark of Calophyllum pseudomolle P.F. Stevens along with α-mangostin (3). The structures of compounds 1–2 were determined based on 1D NMR (1H, 13C) and 2D NMR (HMQC, HMBC), as well as HRESIMS spectroscopic analysis...