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Tomato steroidal alkaloid glycosides, esculeosides A and B, from ripe fruits |
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| Authors: | Yukio Fujiwara Yukie Uehara Masafumi Okawa Masateru Ono Toshihiro Nohara |
| Institution: | a Faculty of Medical and Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto 862-0973, Japan b School of Agriculture, Kyushu Tokai University, 5435 Choyo, Aso, Kumamoto 869-1404, Japan c Faculty of Engineering, Kyushu Kyoritsu University, 1-8 Jiyugaoka, Yahata-nishi-ku, Kitakyushu 807-8585, Japan |
| Abstract: | Major novel steroidal alkaloid glycosides, named esculeoside A (1) and esculeoside B (2), have been isolated from the pink color-type and the red color-type, respectively, of the ripe tomato fruits of Lycopersicon esculentum MILL. for the first time. The structures of 1 and 2 have been characterized as 3-O-β-lycotetraosyl (5S,22S,23S,25S)-23-acetoxy-3β,27-dihydroxyspirosolane 27-O-β-d-glucopyranoside and 3-O-β-lycotetraosyl (5S,22S,23R,25S)-22,26-epimino-16β,23-epoxy-3β,23,27-trihydroxycholestane 27-O-β-d-glucopyranoside, respectively. |
| Keywords: | Tomato: Lycopersicon esculentum Steroidal alkaloid glycoside Spirosolane-type Solanocapsine-type Cytotoxicity Anti-herpes activity |
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