Isolation and synthesis of a new chromenochalcone and a new chromene from Orthosiphon glabratus.
Chemical investigation on Orthosiphon glabratus afforded 10 compounds, among which a chromenochalcone and a chromene are new. The structures of the new constituents were settled from their 1D- and 2D-NMR spectra. The synthesis of these two compounds and some of their analogues have been accomplished.
Das
Biswanath
B
Organic Chemistry Division-I, Indian Institute of Chemical Technology, Hyderabad, India. biswanathdas@yahoo.com
Thirupathi
Ponnaboina
P
Kumar
Rathod Aravind
RA
Sarma
Akella Venkata Subramanya
AV
Basha
Shaik Jilani
SJ
D001578:Benzopyrans / Q000737:chemistry / Q000302:isolation & purification*; D047188:Chalcones / Q000737:chemistry / Q000302:isolation & purification*; D007194:India; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D031342:Orthosiphon / Q000737:chemistry*
C540724:1-(2,2-dimethyl-5-hydroxy-2H-chromen-6-yl)-3-(2',3',4'-trimetho-xyphenyl)propenone; C540725:6-acetyl-3,4-dihydro-2,2-dimethyl-5-O-prenyl-chromene; D001578:Benzopyrans; D047188:Chalcones