5,9,11-Trihydroxy-2,2-dimethyl-3-(2-methylbut-3en-2-yl)pyrano[2,3-a]xanthen-12(2H)-one from the Stem Bark of Calophyllum tetrapterum Miq.

• Main Authors: Tjitjik Srie Tjahjandarie, Ratih Dewi Saputri, Mulyadi Tanjung
• Format: Article PeerReviewed
• Language: English; English; English; English
• Published: MDPI 2017
• Subjects: Q Science; Q Science (General); QD Chemistry
• Online Access: http://repository.unair.ac.id/90959/1/C.12.%20Abstract.pdf; http://repository.unair.ac.id/90959/2/C.12.%20Fulltext%20%28Karya%20Ilmiah%29.pdf; http://repository.unair.ac.id/90959/3/C12_Validasi_5%2C9%2C11-Trihydroxy-2%2C2-dimethyl-3-%282-methylbut.pdf; http://repository.unair.ac.id/90959/4/C12_Similarity.pdf; http://repository.unair.ac.id/90959/; https://www.mdpi.com/1422-8599/2017/1/M936/htm; https://doi.org/10.3390/M936
• Institution: Universitas Airlangga

A new pyranoxanthone namely 5,9,11-trihydroxy-2,2-dimethyl-3-(2-methylbut-3-en-2-yl) pyrano[2,3-a]xanthen-12(2H)-one (1) was isolated from the stem bark of Calophyllum tetrapterum Miq. The structure of compound 1 was determined by means of spectroscopic methods including UV, IR, HRESIMS, 1D and 2D N...