| abstract |
This invention relates to new polypeptide compounds represented by general formula (I), wherein R1, R2, R3 and R4 are as defined in the description or a salt thereof which has antimicrobial activities (especially, antifungal activities), inhibitory activity on .beta.-1,3-glucan synthase, to process for preparation thereof, to a pharmaceutical composition comprising the same, and to a method for prophylactic and/or therapeutic treatment of infectious diseases including <u>Pneumocystis</u> <u>carinii</u> infection (e.g. <u>Pneumocystis</u> <u>carinii</u> pneumonia) in a human being or an animal. |