Chromanones and aryl glucoside analogs from the entomopathogenic fungus Aschersonia confluens BCC53152
作者:Karoon Sadorn、Siriporn Saepua、Wikorn Punyain、Wacharee Saortep、Wilunda Choowong、Pranee Rachtawee、Pattama Pittayakhajonwut
DOI:10.1016/j.fitote.2020.104606
日期:2020.7
(2S)-l-3-phenyllactic acid (15), papuline [or (2S)-l-3-phenyllactic acid methyl ester, 16], 2'-epi terpendole A (17), terpendoles C (18) and D (19), cholic acid, and zeorin were isolated from the entomopathogenic fungus Aschersonia confluens BCC53152. Their chemical structures were elucidated on the basis of NMR spectroscopic and mass spectrometric analyses. The absolute configurations were determined by
六种新化合物[香气内酯A(1)和B(2),香气苯并二氢吡喃酮A(3),苯乙基4'-O-甲基葡糖苷(8),4'-O-甲基核苷(10)和4'-O-甲基torachrysone 8 -O-葡萄糖苷(11)]和一种天然新化合物[4'-O-甲基-β-d-苄基葡萄糖苷(9)]以及十四种已知化合物,包括全肽二肽A(5),B(7)和D (4),香柏树油A(6),丁子香苷(12),5-羟基-2,3-二甲基-7-甲氧基色酮(13),(S)-1-苯基-1,2-乙二醇(14),( 2S)-1-3-苯基乳酸(15),巴布林[或(2S)-1-3-苯基乳酸甲酯16],2'-上萜烯A(17),萜烯C(18)和D( 19),从昆虫病原真菌融合粉菌BCC53152中分离出胆酸和玉米醇溶蛋白。在NMR光谱和质谱分析的基础上阐明了它们的化学结构。通过使用来自NOESY相关性,化学方法,旋光度的证据以及ECD光谱数据与计算得出的E