Leucoanthocyanidin

Leucoanthocyanidin (flavan-3,4-diols) are colorless chemical compounds related to anthocyanidins and anthocyanins. Leucoanthocyanins can be found in Anadenanthera peregrina and in several species of Nepenthes including N. burbidgeae, N. muluensis, N. rajah, N. tentaculata, and N. × alisaputrana.^{[citation needed]}

Leucoanthocyanidin

Names
IUPAC name Flavan-3,4-diol
Systematic IUPAC name 2-Phenyl-3,4-dihydro-2H-1-benzopyran-3,4-diol
Identifiers
CAS Number	5023-02-9 Y
3D model (JSmol)	Interactive image
ChemSpider	4477408
PubChem CID	5318979
UNII	EH726HE44D Y
InChI InChI=1S/C15H14O3/c16-13-11-8-4-5-9-12(11)18-15(14(13)17)10-6-2-1-3-7-10/h1-9,13-17H Key: XIMADJWJJOMVID-UHFFFAOYSA-N
SMILES C1=CC=C(C=C1)C2C(C(C3=CC=CC=C3O2)O)O
Properties
Chemical formula	C15H14O3
Molar mass	242.274 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

Such compounds include:

• Leucocyanidin
• Leucodelphinidin
• Leucofisetinidin
• Leucomalvidin
• Leucopelargonidin
• Leucopeonidin
• Leucorobinetinidin
• Melacacidin
• Teracacidin from Acacia obtusifolia and Acacia maidenii heartwoods^[1]

Leucoanthocyanidins have been demonstrated to be intermediates in anthocyanidin biosynthesis in flowers of Matthiola incana.^[2]

Bate-smith recommended in 1954 the use of the Forestal solvent for the isolation of leuco-anthocyanins.^[3]

Metabolism

Leucoanthocyanidin dioxygenase uses flavan-3,4-diols to produce 3-hydroxyanthocyanidins.^[4] The gene encoding the enzyme (PpLDOX) has been identified in peach^[5] and expression has been studied in Vitis vinifera.^[6]