5,9,11-Trihydroxy-2,2-dimethyl-3-(2-methylbut-3-en-2-yl)pyrano[2,3-a]xanthen-12(2H)-one from the Stem Bark of Calophyllum tetrapterum Miq.
نویسندگان
چکیده
منابع مشابه
5,9,11-Trihydroxy-2,2-dimethyl-3-(2-methylbut-3- en-2-yl)pyrano[2,3-a]xanthen-12(2H)-one from the Stem Bark of Calophyllum tetrapterum Miq
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 NMR.
متن کامل5,9,11-Trihydroxy-10-(2''-hydroxy-3''-methylbut-3''-en- 1-yl)-2,2-dimethyl-3-(2'-methylbut-3'-en-2'-yl)- 2H,12H-pyrano[2,3-a]xanthen-12-one from Calophyllum pseudomole
A new pyranocoumarin, namely 5,9,11-trihydroxy-10-(2′′-hydroxy-3′′-methylbut3′′en-1-yl)-2,2-dimethyl-3-(2′-methylbut-3′-en-2′-yl)-2H,12H-pyrano[2,3-a]xanthen-12-one 1, was isolated from the stem barkof Calophyllum pesudomole. The structure of compound 1 was elucidated based on its ultaraviolet (UV); infrared (IR); high resolution electro spray ionization mass spectrometry (HRESIMS); 1D and 2D n...
متن کاملmolbank Short Note 5,9,11-Trihydroxy-2,2-dimethyl-10-(3′-methyl-2′- butenyl)-3-(2”-methyl-3”-butenyl)pyrano[2,3- a]xanthen-12(2H)-one from the Stem Bark of Calophyllum pseudomole
5,9,11-Trihydroxy-2,2-dimethyl-10-(3′-methyl-2′-butenyl)-3-(2”-methyl-3”-butenyl)pyrano[2,3-a]xanthen-12(2H)-one (1) was isolated from the stem bark of Calophyllum pseudomole. The structure of 1 was established by spectroscopic analysis which included UV, IR, HRESIMS and NMR experiments.
متن کامل(2E)-1-(2,5-Dimethyl-3-thienyl)-3-(2-methoxyphenyl)prop-2-en-1-one
In the title compound, C(16)H(16)O(2)S, the central propenone group is almost planar (r.m.s. deviation = 0.009 Å) and subtends dihedral angles of 8.55 (8) and 16.22 (8)° to the 2-meth-oxy-phenyl and 2,5-dimethyl-thio-phene residues, respectively. The dihedral angle between the ring systems is 23.47 (5)°. In the crystal, mol-ecules are linked by weak C-H⋯π inter-actions and aromatic π-π stacking...
متن کامل(E)-3-Hydroxy-5,5-dimethyl-2-(3-phenylprop-2-en-1-yl)cyclohex-2-en-1-one
Five of the atoms of the six-membered cyclo-hexene ring of the title compound, C(17)H(20)O(2), are essentially coplanar (r.m.s. deviation = 0.006 Å), with the sixth (the dimethyl-methyl C atom) deviating from the mean plane of the five atoms by 0.610 (2) Å. This plane is nearly perpendicular to the cinnamyl portion, the two planes being aligned at 85.1 (1)°. Two mol-ecules are linked by an O-H⋯...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Molbank
سال: 2017
ISSN: 1422-8599
DOI: 10.3390/m936