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Chitranone—a new Binaphthaquinone from Plumbago zeylanica

✍ Scribed by Akella V.B. Sankaram; Adapa Srinivasarao; Gurbachan S. Sidhu

Book ID
108365240
Publisher
Elsevier Science
Year
1976
Tongue
English
Weight
235 KB
Volume
15
Category
Article
ISSN
0031-9422

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Structure of plumbazeylanone: a novel tr
Structure of plumbazeylanone: a novel trimer of plumbagin from plumbago zeylanica
✍ G.M. Kamal; B. Gunaherath; A.A.Leslie Gunatilaka; Ronald H. Thomson 📂 Article 📅 1984 🏛 Elsevier Science 🌐 French ⚖ 143 KB

while the 13C spectrum provides additional evidence for two quinonoid (190.0, 184.1) and four ketonic (202.7, 196.3, 189.7, 183.6) carbonyl groups. Olefinic protons are absent but evidently a methylene bridge is present probably derived, as in zeylanone (A), from the methyl group of one of the plumb