This invention relates to new lipopeptide compound represented by the following general formula (I):
Wherein
R
1
, R
2
, R
3
, R
4
, R
5
and R
6
are as defined in the description or a salt thereof which has antimicrobial activities (especially, antifungal activities), inhibitory activity on β-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
Pneumocystis carinii
infection (e.g.
Pneumocystis carinii
pneumonia) in a human being or an animal.