Exact Mass: 526.195121
Exact Mass Matches: 526.195121
Found 18 metabolites which its exact mass value is equals to given mass value 526.195121,
within given mass tolerance error 6.4E-8 dalton. Try search metabolite list with more accurate mass tolerance error
1.28E-8 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