New Quinazolinone Alkaloids within Rare Amino Acid Residue from Coral-Associated Fungus, <i>Aspergillus versicolor</i> LCJ-5-4 Yibin Zhuang Xiancun Teng Yi Wang Peipei Liu Guoqiang Li Weiming Zhu 10.1021/ol103164n.s001 https://acs.figshare.com/articles/journal_contribution/New_Quinazolinone_Alkaloids_within_Rare_Amino_Acid_Residue_from_Coral_Associated_Fungus_i_Aspergillus_versicolor_i_LCJ_5_4/2687059 Cottoquinazoline D (<b>3</b>), a new alkaloid with a 1-aminocyclopropane-1-carboxylic acid residue rarely discovered in nature, was isolated and identified together with two new quinazolinone alkaloids, cottoquinazolines B (<b>1</b>) and C (<b>2</b>), from coral-associated fungus <i>Aspergillus versicolor</i> LCJ-5-4. Their structures including absolute configurations were elucidated based on spectroscopic methods, X-ray single crystal diffraction analysis, and chemical methods. A possible biogenetic pathway for them was proposed. 2011-03-04 00:00:00 Residue quinazolinone alkaloids Rare Amino acid residue crystal diffraction analysis aminocyclopropane cottoquinazoline Aspergillu New Quinazolinone Alkaloids nature biogenetic pathway fungus Fungu configuration spectroscopic methods LCJ versicolor chemical methods