Question

Answer True or False to the following:

i) ______Flavonolignans are biosynthesized by the shikimate and the acetate pathways.

ii) ______Lignins are dimeric compounds formed from cinnamic alcohols.

iii)______Phenolic oxidative coupling is involved in the formation of lignans and lignins.

iv)______Lignans and neolignans formed in the nature are usually enantiomerically pure compounds.

v)______Resveratrol (a stilbene) is biosynthesized by the shikimate and the acetate pathways.

vi)______Acetate pathway is the major biosynthetic pathway for the formation of phenylpropenes and para-aminobenzoic acid (PABA).

vii)______The indole in L-tryptophan is synthesized from anthranilic acid formed by the shikimate pathway.

viii)______Coumarins are synthesized by the acetate and shikimate pathways

Answer 1

i) _TRUE_____Flavonolignans are biosynthesized by the shikimate and the acetate pathways.

ii) __TRUE____Lignins are dimeric compounds formed from cinnamic alcohols.

iii)_TRUE_____Phenolic oxidative coupling is involved in the formation of lignans and lignins.

iv)__TRUE____Lignans and neolignans formed in the nature are usually enantiomerically pure compounds.

v)__FALSE____Resveratrol (a stilbene) is biosynthesized by the shikimate and the acetate pathways.

vi)___FALSE___Acetate pathway is the major biosynthetic pathway for the formation of phenylpropenes and para-aminobenzoic acid (PABA).

vii)_TRUE_____The indole in L-tryptophan is synthesized from anthranilic acid formed by the shikimate pathway.

viii)__TRUE____Coumarins are synthesized by the acetate and shikimate pathways.