When a 10-Carbon Unit and a 5-Carbon Unit Condense to a 15-Carbon

question 75

Essay

When a 10-carbon unit and a 5-carbon unit condense to a 15-carbon intermediate in the pathway to cholesterol, the mechanism of condensation is basically different from that of the condensation of two 15-carbon units to the 30-carbon compound squalene. Describe the two condensations in enough chemical detail to illustrate the difference between them. (You should show relevant structures.)

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Definitions:

Parent Country

Parent country refers to the country where a multinational corporation is headquartered. Employees from this country working abroad for the corporation might be known as expatriates.

Third Country

A country that is neither the parent country nor the host country of an employer.

Third-Country National

An individual employed by a company who is neither a citizen of the country where the company is headquartered nor of the country where they are working.

Host-Country National

An individual who is a citizen of the country in which a foreign subsidiary or company operates.