Abstract: | The known compound trojanoside A (1) and a new cycloartane glycoside cyclostipuloside E (2) were isolated from the aerial parts of Tragacantha stipulosa Boriss. The structure of cyclostipuloside E was proposed as 24R-cycloartan-3,6,16,24,25-pentaol 6,16,25-tri-O--D-glucopyranoside 3-O--D-xylopyranoside based. |