Isolation of New Tremorgenic Metabolites from an Ascomycete, Corynascus setosus.

Isolation and identification of bound compounds from corn bran and their antioxidant and angiotensin I-converting enzyme inhibitory activities

“…The 1 H NMR spectrum revealed the presence of three olefinic protons at δ 7.62 (s, 1H), 7.29 (m, 1H), and 6.58 (m, 1H), and two oxygen-bearing protons at δ 4.73 (d, J = 1.4 Hz, 2H). The 13 C NMR spectrum of 7 showed four olefinic carbons at δ 150.0, 118.0, 112.6, and 147.1, and one oxygen-bearing methylene carbons at δ 65.0, as well as one carbonyl carbon at δ 187.7.Based on these data and comparison with data from the literature, compound 7 was identified as 2-(1-oxo-2-hydroxyethyl) furan[26] …”

In vitrosynergistic antibacterial activities of helvolic acid on multi-drug resistantStaphylococcus aureus

“…Defining the potency of 1 mol L À1 clavulanic acid as 1.000, the potency of 1 mol L À1 helvolic acid was 2.960 AE 0.097. Fujimoto, Negishi, Yamaguchi, Nishi, and Yamazaki (1996). The chemical structure of helvolic acid is shown in Figure 3.…”

Syntheses of Quinazoline-2,4-dione Alkaloids and Analogues from Mexican Zanthoxylum Species †

“…Quinazolinone and quinazolinedione derivatives are of considerable interest because of their wide array of pharmacological properties [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. We have been specifically interested in the synthesis of novel heterocycles containing the quinazoline-2,4-dione backbone, which are known to exhibit potential anti-hypertensive properties [16][17][18][19][20].…”