**3.3 Chemical comparison of active compounds**

Results of the TLC suggest the presence of phenolic and anthraquinone compounds at the crude extract of the leaves of peppertree and active fractions. Yet, according to the present results, the crude extract and the ethyl acetate fraction had alkaloids and terpenoids.

The chemical analysis of the compounds with antimicrobial activity extracted from the endophytes of the peppertree leaves suggest the presence of alkaloids in all the tested extracts. Two microorganisms (*Alternaria* sp. - LGMF692 and *Streptomyces* sp. - LGMF696) also produced anthraquinones while one of them (*Phomopsis* sp. - LGMF655) produced terpenoids.
