Question

Identify the following double bonds either E,Z or None (N) in the compounds given below either.
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(a) Bongkrekic acid is a toxic compound produced by pseudomonas cocovenenans, and isolated from a mold that rows on bongkrek, a fermented Indonesian coconut dish. (a) Label each double bond as E,Z or neither (N).

(b) How many total stereoiomers (including all types) are possible for bongkrekic acid ?.......
(c ) How many sites of unsaturation are present in bongkrekic acid ?............

Answer 1

Correct Answer - (A) 1-N; 2-Z; 3-E; 4-Z; 5-Z; 6-E; 7-N
(B) (a) 1-Z; 2-E;3-E;4-Z;5-Z;6-E
(b) `2^(9)`
(c ) 10
(A) 1-N ,
2-Z ,
3-E
4-Z ,
5-Z
(B) 1-Z ,
2-E ,
3-E :
4-Z ,
5-Z , 6-E
If hight priority atoms/groups are situated on same dise then configuration will be (Z) and if these are situated on opposite side, then congiuration will be (E).