gambierol-is-a-toxin-from-marine-algal-bloom-that-is-responsible-for-fish-poison

Question

Gambierol is a toxin from marine algal bloom that is responsible for fish poisoning. A group of scientists from Tohoku University, Japan has reported its isolation and structure determination in 1993. The structure was found to have a large number of fused rings.

Chemical structure of Gambierol showing ether and alcohol functional groups.

(a) Determine the number of ether groups present?
(b) Determine the number of alcohol groups present, and classify each of them as 1°, 2°, or 3°.
(c) Identify if there are any other functional groups.

Accepted Answer

(a). Eight ether groups
(b). Three alcohol groups: 1° = 1, 2° = 1, and 3° = 1
(c) Four alkene groups.

Answer

(a). Eight ether groups
(b). Two alcohol groups: 1° = 1, 2° = 1, and 3° = 0
(c) Three alkene groups.

Answer

(a). Seven ether groups
(b). Two alcohol groups: 1° = 1, 2° = 1, and 3° = 0
(c) Four alkene groups.

Answer

(a). Seven ether groups
(b). Three alcohol groups: 1° = 1, 2° = 2, and 3° = 0
(c) Four alkene groups.

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