Andrographolide is the marker compound of Andrographis paniculata (Kalmegh), a herb that constitutes many traditional Asian remedies. In the present photochemical approach to modify its 12-en-14-hydroxyl moiety into 13-enone, a methanol solution of andrographolide has been illuminated with blue laser for 6 hours in the presence of sodium bicarbonate. After the illumination, it has been discovered that the 12-en-14-hydroxyl moiety undergoes modification into the 11-enone.

中文翻译：

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碳酸氢钠存在下穿心莲内酯经过蓝色激光照射后发生修饰

穿心莲内酯是穿心莲（Kalmegh）的标志物，穿心莲是构成许多传统亚洲药物的草药。在本发明的将其12-en-14-羟基部分修饰为13-烯酮的光化学方法中，穿心莲内酯的甲醇溶液在碳酸氢钠存在下用蓝色激光照射了6小时。照射后，发现12-en-14-羟基部分被修饰成11-烯酮。