Exact Mass: 526.1951
Exact Mass Matches: 526.1951
Found 18 metabolites which its exact mass value is equals to given mass value 526.1951,
within given mass tolerance error 0.001 dalton. Try search metabolite list with more accurate mass tolerance error
0.0002 dalton.
8-benzyl-3-[(3-hydroxy-4-methoxypyridine-2-carbonyl)amino]-6-methyl-4,9-dioxo-1,5-dioxonan-7-yl (2E)-2-methylbut-2-enoate
8-benzyl-3-[(3-hydroxy-4-methoxypyridine-2-carbonyl)amino]-6-methyl-4,9-dioxo-1,5-dioxonan-7-yl (2E)-2-methylbut-2-enoate
UK-2B
UK-2B
A lactone which is 9-methyl-1,5-dioxonane-2,6-dione substituted by a benzyl group at position 8, a [(3-hydroxy-4-methoxypyridine-2-yl)carbonyl]amino group at position 3 and a (2-methylbut-2-enoyl)oxy group at position 7. It is isolated from the mycelia cake of Streptomyces sp. 517-02 and exhibits potent antifungal activity.
5-ethenyl-4-({2-methylpyrido[3,4-b]indol-1-yl}methyl)-6-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-5,6-dihydro-4h-pyran-3-carboxylic acid
5-ethenyl-4-({2-methylpyrido[3,4-b]indol-1-yl}methyl)-6-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-5,6-dihydro-4h-pyran-3-carboxylic acid
methyl (4s,5s,6r)-5-ethenyl-4-{9h-pyrido[3,4-b]indol-1-ylmethyl}-6-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-5,6-dihydro-4h-pyran-3-carboxylate
methyl (4s,5s,6r)-5-ethenyl-4-{9h-pyrido[3,4-b]indol-1-ylmethyl}-6-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-5,6-dihydro-4h-pyran-3-carboxylate
(3s,6s,7r,8r)-8-benzyl-3-(3-hydroxy-4-methoxypyridine-2-amido)-6-methyl-4,9-dioxo-1,5-dioxonan-7-yl (2e)-2-methylbut-2-enoate
(3s,6s,7r,8r)-8-benzyl-3-(3-hydroxy-4-methoxypyridine-2-amido)-6-methyl-4,9-dioxo-1,5-dioxonan-7-yl (2e)-2-methylbut-2-enoate
methyl 5-ethenyl-4-{9h-pyrido[3,4-b]indol-1-ylmethyl}-6-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-5,6-dihydro-4h-pyran-3-carboxylate
methyl 5-ethenyl-4-{9h-pyrido[3,4-b]indol-1-ylmethyl}-6-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-5,6-dihydro-4h-pyran-3-carboxylate
8-benzyl-3-(3-hydroxy-4-methoxypyridine-2-amido)-6-methyl-4,9-dioxo-1,5-dioxonan-7-yl 2-methylbut-2-enoate
8-benzyl-3-(3-hydroxy-4-methoxypyridine-2-amido)-6-methyl-4,9-dioxo-1,5-dioxonan-7-yl 2-methylbut-2-enoate
methyl (4s,5r,6s)-5-ethenyl-4-{9h-pyrido[3,4-b]indol-1-ylmethyl}-6-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-5,6-dihydro-4h-pyran-3-carboxylate
methyl (4s,5r,6s)-5-ethenyl-4-{9h-pyrido[3,4-b]indol-1-ylmethyl}-6-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-5,6-dihydro-4h-pyran-3-carboxylate
methyl 5-ethenyl-4-{9h-pyrido[3,4-b]indol-1-ylmethyl}-6-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-5,6-dihydro-4h-pyran-3-carboxylate
methyl 5-ethenyl-4-{9h-pyrido[3,4-b]indol-1-ylmethyl}-6-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-5,6-dihydro-4h-pyran-3-carboxylate
[(1r,2s,10r,12s,13s)-12-hydroxy-7,18-dimethoxy-6,17,21-trimethyl-5,8,16,19-tetraoxo-11,21-diazapentacyclo[11.7.1.0²,¹¹.0⁴,⁹.0¹⁵,²⁰]henicosa-4(9),6,15(20),17-tetraen-10-yl]methyl acetate
[(1r,2s,10r,12s,13s)-12-hydroxy-7,18-dimethoxy-6,17,21-trimethyl-5,8,16,19-tetraoxo-11,21-diazapentacyclo[11.7.1.0²,¹¹.0⁴,⁹.0¹⁵,²⁰]henicosa-4(9),6,15(20),17-tetraen-10-yl]methyl acetate
8-benzyl-3-(3-hydroxy-4-methoxypyridine-2-amido)-6-methyl-4,9-dioxo-1,5-dioxonan-7-yl (2z)-2-methylbut-2-enoate
8-benzyl-3-(3-hydroxy-4-methoxypyridine-2-amido)-6-methyl-4,9-dioxo-1,5-dioxonan-7-yl (2z)-2-methylbut-2-enoate
(4s,5r,6s)-5-ethenyl-4-({2-methylpyrido[3,4-b]indol-1-yl}methyl)-6-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-5,6-dihydro-4h-pyran-3-carboxylic acid
(4s,5r,6s)-5-ethenyl-4-({2-methylpyrido[3,4-b]indol-1-yl}methyl)-6-{[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-5,6-dihydro-4h-pyran-3-carboxylic acid
