From the lipid fraction of cells of Mycobacterium kansasii. four pheno
lic glycolipids K5, K6, K7 and K8, were isolated, in addition to three
known phenolic glycolipids KI, KII and KIV. K5 was identified as a te
traglycosyl phenolic glycolipid whose sugar moiety was ha-rhamnopyrano
syl(1-->3)-2,4-di-O-methyl-L-alpha- rhamnopyranosyl(1-->) and phenolic
glycolipid K6 as deacetyl-KI. Glycolipids K7 and K8 were triglycosyl
phenolic glycolipids having the sugar moieties of ->3)-2,4-di-O-methyl
-L-alpha-rhamnopyransoyl(1-->) and l(1-->3)-2-O-methyl-L-alpha-rhamnop
yranosyl(1-->), respectively. Phenolic glycolipids K6 and K7 have been
referred to as controlled degradation products of phenolic glycolipid
KI previously. Also isolated was -5-mycolyl-alpha-arabinofurnosyl(1--
>1')-glycerol, an analogue of glycoIipid ai, originally isolated from
Mycobacterium avium-Mycobacterium intracellulare complex, having mycol
ic acids of M. kansasii.