(+)- and (-)-syn-2-isobutyl-4-methylazetidine-2,4-dicarboxylic acids from the extract of Monascus pilosus-fermented rice (red-mold rice).
The structures of two enantiomeric azetidine-type amino acids isolated from the n-butanol-soluble fraction of the 70% ethanol extract of red-mold rice fermented with Monascus pilosus were established to be (+)- [1; (+)-monascumic acid] and (-)-syn-2-isobutyl-4-methylazetidine-2,4-dicarboxylic acids [2; (-)-monascumic acid] based on spectroscopic methods.
Akihisa
Toshihiro
T
College of Science and Technology, Nihon University, 1-8 Kanda Surugadai, Chiyoda-ku, Tokyo 101-8308, Japan.
Mafune
Shoichi
S
Ukiya
Motohiko
M
Kimura
Yumiko
Y
Yasukawa
Ken
K
Suzuki
Takashi
T
Tokuda
Harukuni
H
Tanabe
Nobukazu
N
Fukuoka
Tadahiko
T
D003998:Dicarboxylic Acids / Q000737:chemistry / Q000302:isolation & purification*; D005285:Fermentation; D015394:Molecular Structure; D032741:Monascus / Q000737:chemistry*; D012275:Oryza; D013237:Stereoisomerism
D003998:Dicarboxylic Acids; C484932:monascumic acid