Category:FL6

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Flavan, Leucoanthocyanidin


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Upper classes : FL Flavonoid

Overview

Flavan Flavanol
FL6F Flavan
Fl6f.png
hydroxy-, methoxyflavan, diffutidin etc.
FL63 Flavan 3-ol
Fl63.png
(epi)catechin, (epi)fisetinidol, mesquitol, etc.
Leucoanthocyanidin
FL64 Flavan 4-ol
Fl64.png
apiforol, luteoforol etc.
FL6D Flavan 3,4-diol
Fl6d.png
leucoanthocyanidin etc.

Catechin

Catechins refer to a subgroup of Flavan 3-ol derivatives (FL63AC). In a stricter sense, it means (+)-Catechin and its stereoisomer (-)-Epicatechin.

Leucoanthocyanidin

Flavan 3-ol is often called flavanol. Flavan 3,4-diol and Flavan 4-ol are called leucoanthocyanidin meaning a precursor (white state) of (colored) anthocyans. The term was first used by Rosenheim in 1920. Leuco comes from the Greek word λευκός (leukos) meaning white.
In scientific terms, leucoanthocyanidins refer to monomers, which are converted to anthocyanidins by 2-oxoglutarate iron-dependent oxygenase (i.e., non-haem oxygenase) called anthocyanidin synthase.

Proanthocyanidin, procyanidin

Proanthocyanidins are polymers of flavan 3-ol, up to 50 units. They are cleaved to anthocyanidins under strongly acidic conditions. Proanthocyanidins that consist exclusively of (epi)catechins are called also procyanidins.


Database statistics データベース統計

Major Plant Families

The number in each family is counted as the number of genera (not species) listed in our registered references. Each reference record is accessible by clicking the link in compound pages. The taxonomy follows the APG-II classification. For details (or if the figure is broken), visit this page.

各科のカウントは種名でなく文献に記載された属名の数です。文献は代謝物ページのリンクからたどれ、分類はAPG-IIです。左の図が表示されない場合はここをクリックしてください。

Subcategories

This category has the following 4 subcategories, out of 4 total.

F

  • [×] FL63(empty)
  • [×] FL64(empty)
  • [×] FL6D(empty)
  • [×] FL6F(empty)
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