ChemInform Abstract: A Novel Pyrimidine Glycoside from Momordica Charantia L.

Abstract

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Cucurbitane-Type Triterpenoids from the Stems of Momordica charantia

“…Cucurbita-5,23(E)-diene-3β,7β,25-triol (1): amorphous, white powder; [R] 25 D +13.5 (c 0.4, CHCl3); 1 H and 13 C NMR data, see Tables 1 and 2 (9), 397 (6), 379 (5), 355 (100), 327 (7), 328 (10), 205 (10), 187 (5), 175 (7), 125 (6), 121 (7), 98 (5), 83 (8); HREIMS m/z [M] + 452.3297 (calcd for C30H44O3 452.3292).…”

“…Momordica charantia L. (Cucurbitaceae), a slender-stemmed tendril climbing vegetable crop, has extensively been used in folk medicine as a remedy for diabetes in Asia. Previous investigations have shown that crude extracts of the fruit of M. charantia possess antidiabetic activity, , and many cucurbitane-type triterpenoids have been isolated from the fruits, – seeds, – and leaves and vines of M. charantia . Recently we reported the isolation and structural elucidation of six cucurbitane-type triterpenoids from the methanolic extract of the stems of this plant .…”

“…These are cucurbita-5,23(E)-diene-3β,7β,25-triol (1), 3β-acetoxy-7β-methoxycucurbita-5,23(E)-dien-25-ol (2), cucurbita-5 (10), 6,23(E)-triene-3β,25-diol (5), and cucurbita-5,24-diene-3,7,23-trione (6). Four known triterpenes, 3β,25-dihydroxy-7β -methoxycucurbita-5,23(E)-diene (3), 10 3βhydroxy-7β,25-dimethoxycucurbita-5,23(E)-diene (4), 10 3β,7β,25trihydroxycucurbita-5,23(E)-dien-19-al (7), 5 and 25-methoxy-3β,7βdihydroxycucurbita-5,23(E)-dien-19-al (8), 19 come from the same part of the plant.…”

Performance of Different Varieties of Tinda (Praecitrullus fistulosus) under Prayagraj Agro-climatic Condition

“…This short duration crop is becoming very popular in north India due to its high nutritional value, good taste and keeping quality as well as high remunerative price" [2]. "Potassium is an important element in plant metabolism, promoting carbohydrates synthesis" [3]. "It has the strongest influence on plant growth, yield and quality attributes that determine fruit marketability" [4].…”