:16-Hydroxytabersonine
{{Chembox
| ImageFile = 16-Hydroxytabersonine.svg
| ImageSize = 200px
| IUPACName = Methyl 16-hydroxy-2,3,6,7-tetradehydro-5α,12β,19α-aspidospermidine-3-carboxylate
| SystematicName = Methyl (3aR,3a1S,10bR)-3a-ethyl-8-hydroxy-3a,3a1,4,6,11,12-hexahydro-1H-indolizino[8,1-cd]carbazole-5-carboxylate
| OtherNames = 11-Hydroxytabersonine
|Section1={{Chembox Identifiers
| CASNo = 22149-28-6
| CASNo_Ref = {{cascite|correct|CAS}}
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = GV2G76UPD2
| PubChem = 443326
| ChemSpiderID = 391562
| SMILES = CC[C@]12CC(=C3[C@@]4([C@H]1N(CC4)CC=C2)c5ccc(cc5N3)O)C(=O)OC
| InChI = 1/C21H24N2O3/c1-3-20-7-4-9-23-10-8-21(19(20)23)15-6-5-13(24)11-16(15)22-17(21)14(12-20)18(25)26-2/h4-7,11,19,22,24H,3,8-10,12H2,1-2H3/t19-,20-,21-/m0/s1
| InChIKey = FXUFRJQCBVSCRZ-ACRUOGEOBW
| StdInChI = 1S/C21H24N2O3/c1-3-20-7-4-9-23-10-8-21(19(20)23)15-6-5-13(24)11-16(15)22-17(21)14(12-20)18(25)26-2/h4-7,11,19,22,24H,3,8-10,12H2,1-2H3/t19-,20-,21-/m0/s1
| StdInChIKey = FXUFRJQCBVSCRZ-ACRUOGEOSA-N
}}
|Section2={{Chembox Properties
| C=21 | H=24 | N=2 | O=3
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|Section3={{Chembox Hazards
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16-Hydroxytabersonine is a terpene indole alkaloid produced by the plant Catharanthus roseus. The metabolite is an intermediate in the formation of vindoline, a precursor needed for formation of the pharmaceutically valuable vinblastine and vincristine. 16-hydroxytabersonine is formed from the hydroxylation of tabersonine by tabersonine 16-hydroxylase (T16H). Tabersonine 16-O-methyltransferase (16OMT) methylates the hydroxylated 16 position to form 16-methoxytabersonine.{{cite journal |last1=Levac |first1=Dylan |last2=Murata |first2=Jun |last3=Kim |first3=Won S. |last4=De Luca |first4=Vincenzo |date=2008 |title=Application of carborundum abrasion for investigating the leaf epidermis: Molecular cloning of Catharanthus roseus 16-hydroxytabersonine-16-O-methyltransferase |journal=The Plant Journal |volume=53 |issue=2 |pages=225–236 |doi=10.1111/j.1365-313X.2007.03337.x |doi-access= |pmid=18053006}}