5,8 - 二羟基 - 2,2 - 二甲基 - 12 - (3 - 甲基 - 丁 - 2 - 烯基)吡喃并[3,2 - ]呫吨 - 6 - 酮（巴西黄烷酮B）
5,8-Dihy-droxy-2,2-dimethyl-12-(3-methyl-but-2-en-yl)pyrano[3,2-]xanthen-6-one (brasixanthone B).
作者信息
Binti Seruji Nurr Maria Ulfa, Rosli Mohd Mustaqim, Jong Vivien Yi Mian, Karunakaran Thiruventhan, Lizazman Mas Atikah, Marlina Anita, Binti Halid Yanti Yana
机构信息
Centre of Applied Science Studies, Universiti Teknologi MARA Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia.
X-ray Crystallography Unit, School of Physics, University Sains Malaysia, 11800 USM, Penang, ., Malaysia.
出版信息
IUCrdata. 2023 Jan 6;8(Pt 1):x221198. doi: 10.1107/S2414314622011981. eCollection 2023 Jan.
The title compound (trivial name brasixanthone B), CHO, isolated from , is characterized by a xanthone skeleton of three fused six-membered rings plus an additional fused pyrano ring and one 3-methyl-but-2-enyl side chain. The core xanthone moiety is almost planar, with a maximum deviation 0.057 (4) Å from the mean plane. In the mol-ecule, an intra-molecular O-H⋯O hydrogen bond forms an (6) ring motif. The crystal structure features inter-molecular O-H⋯O and C-H⋯O inter-actions.
从[具体来源]中分离得到的标题化合物（俗名巴西酮B），化学式为C₂₀H₂₀O₆，其特征在于具有由三个稠合六元环组成的氧杂蒽酮骨架，外加一个额外的稠合吡喃环和一个3 - 甲基 - 丁 - 2 - 烯基侧链。核心氧杂蒽酮部分几乎是平面的，与平均平面的最大偏差为0.057 (4) Å。在分子中，分子内O—H⋯O氢键形成一个(6)环模式。晶体结构具有分子间O—H⋯O和C—H⋯O相互作用。
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