Karantosida
Karantosida adalah beberapa glikosida triterpenoid kukurbitana terkait yang ditemukan dalam buah tumbuhan merambat pare (Momordica charantia).[1] Termasuk di antaranya:
- Karantosida I; (19R,23E)-5β,19-Epoksi-19-metoksikukurbita-6,23,25-trien-3β-ol 3-O-β-D-glukopiranosida: padatan amorf.
- Karantosida II; (19R,23R)-5β,19-Epoksi-19,23-dimetoksikukurbita-6,24-dien-3β-ol 3-O-β-D-alopiranosida: padatan amorf.
- Karantosida III; (23E)-5β,19-Epoksikukurbita-6,23,25-trien-3β-ol 3-O-β-D-glukopiranosida: padatan amorf.
- Karantosida IV; (23E)-5β,19-Epoksikukurbita-6,23,25-trien-3β-ol 3-O-β-D-alopiranosida: jarum tidak berwarna, meleleh pada 256–260 °C.
- Karantosida V; (23R)-5β,19-Epoksi-23-metoksikukurbita-6,24-dien-3β-ol 3-O-β-D-glukopiranosida: jarum tidak berwarna, meleleh pada 235–240 °C.
- Karantosida VI; (23S)-5β,19-Epoksi-23-metoksikukurbita-6,24-dien-3β-ol 3-O-β-D-alopiranosida: padatan amorf.
- Karantosida VII; (23E)-3β-Hidroksikukurbita-6,23,25-trien-5β,19-olide 3-O-β-D-glukopiranosida: jarum tak berwarna, titik leleh 258–262 °C
- Karantosida VIII; (23E)-3β-Hidroksi-7β,25-dimetoksikukurbita-5,23-dien-19-al 3-O-β-D-glukopiranosida: padatan amorf.
Karantosida I sampai VIII dapat diekstraksi dari buah segar dengan metanol dan etil asetat.[1]
Lihat juga
Referensi
- ^ a b Akihisa T, Higo N, Tokuda H, Ukiya M, Akazawa H, Tochigi Y, Kimura Y, Suzuki T, Nishino H, et al. (2007). "Cucurbitane-Type Triterpenoids from the Fruits of Momordica charantia and Their Cancer Chemopreventive Effects". Journal of Natural Products. 70 (8): 1233–1239. doi:10.1021/np068075p. PMID 17685651.
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