HOSENKOSIDE-F, HOSENKOSIDE-G, HOSENKOSIDE-H, HOSENKOSIDE-I, HOSENKOSIDE-J, AND HOSENKOSIDE-K, NOVEL BACCHARANE GLYCOSIDES FROM THE SEEDS OFIMPATIENS-BALSAMINA

From the seeds of Impatiens balsamina we have isolated six novel bacch arane glycosidcs, hosenkosides F-K. The structures of all isolates wer e determined by the use of two dimensional (2D) NMR techniques (H-1-H- 1 correlation spectroscopy (COSY), heteronuclear multiple quantum cohe rence (HMQC), heteronuclear multiple-bond correlation (HMBC), rotating frame Overhauser enhancement spectroscopy (ROESY), total correlation spectroscopy (TOCSY)) and chemical derivatization. Hosenkosides F, H a nd I are hosenkol B 3-O-sambubiosido-26-O-glucoside, 3-O-sambubioside and 3,26-O-diglucoside, respectively. Hosenkoside G is hoscnkol C 3-O- sambubiosido-28-O-glucoside. Hosenkosides J and K are hosenkol A 3-O-s ophoroside and 3-O-sophorosido-26-O-glucosyl-28-O-glucoside, respectiv ely.