Variecolactone
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| ImageFile = Variecolactone.svg
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| IUPACName = (7E,14S,19S)-5α-Hydroxy-5β,25-epoxy-13,15:14,19-dicyclo-13,14-seco-2α,6α-ophiobola-7,20-dien-25-one
| SystematicName = [1S,2aR,2a1R,4a(5)E,6aS,6bS,7S,9aS,11aR,12aS]-2a-Hydroxy-1,9a,11a-trimethyl-7-(prop-1-en-2-yl)-1,2,2a,2a1,6,6a,6b,7,8,9,9a,10,11,11a,12,12a-hexadecahydro-4H-3-oxapentaleno[1′,6′:4,5,6]cycloocta[1,2-a]inden-4-one
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|Section1={{Chembox Identifiers
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| CASNo = 216445-01-1
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| PubChem = 10068616
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| StdInChI=1S/C25H36O3/c1-14(2)16-8-9-23(4)10-11-24(5)13-18-15(3)12-25(27)20(18)17(22(26)28-25)6-7-19(24)21(16)23/h6,15-16,18-21,27H,1,7-13H2,2-5H3/b17-6+/t15-,16+,18-,19-,20-,21-,23-,24+,25+/m0/s1
| StdInChIKey = FHJWMBGJDFBYNQ-SSPKKXFYSA-N
| SMILES = C[C@H]1C[C@@]2([C@@H]/3[C@H]1C[C@]4(CC[C@@]5(CC[C@@H]([C@H]5[C@@H]4C/C=C3/C(=O)O2)C(=C)C)C)C)O
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|Section2={{Chembox Properties
| C=25 | H=36 | O=3
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|Section3={{Chembox Structure
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|Section5={{Chembox Thermochemistry
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|Section6={{Chembox Pharmacology
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|Section8={{Chembox Related
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Variecolactone is a bio-active ascomycete isolate.{{cite journal |last1=Fujimoto |first1=Haruhiro |last2=Nakamura |first2=Etsuko |last3=Okuyama |first3=Emi |last4=Ishibashi |first4=Masami |title=Immunomodulatory Constituents from an Ascomycete, Emericella aurantio-brunnea. |journal=Chemical and Pharmaceutical Bulletin |date=2000 |volume=48 |issue=10 |pages=1436–1441 |doi=10.1248/cpb.48.1436 |pmid=11045446}}