(S)-5-Guanidino-2-[(R)-2-(3-guanidino-propylamino)-3-mercapto-propionylamino]-pentanoic acid [(S)-1-((S)-1-carbamoyl-2-mercapto-ethylcarbamoyl)-2-naphthalen-2-yl-ethyl]-amide 在
ammonium hydroxide 、
air 作用下,
以3.0 mg的产率得到(4S,7S,10S,13R)-10-(3-Guanidino-propyl)-13-(3-guanidino-propylamino)-7-naphthalen-2-ylmethyl-6,9,12-trioxo-1,2-dithia-5,8,11-triaza-cyclotetradecane-4-carboxylic acid amide