Questions from Organic Chemistry

Q: Draw the hypothetical ring-flip of trans-decalin and explain

Draw the hypothetical ring-flip of trans-decalin and explain why it does not occur. Use this analysis to explain why cholesterol has a fairly rigid three-dimensional geometry.

Q: Draw chair conformations for each of the following compounds and then identify

Draw chair conformations for each of the following compounds and then identify whether each substituent is axial or equatorial:

Q: Prednisolone acetate is an anti-inflammatory agent in clinical use.

Prednisolone acetate is an anti-inflammatory agent in clinical use. Itis similarin structure to cortisol, with the following two differences: 1. Prednisolone acetate exhibits a double bond between C1...

Q: The following compounds are steroids. One is an anabolic steroid called

The following compounds are steroids. One is an anabolic steroid called oxymetholone and the other, called norgestrel, is used in oral contraceptive formulations. Identify which compound is likely the...

Q: Classify each prostaglandin according to the instructions provided in Section 26.

Classify each prostaglandin according to the instructions provided in Section 26.7.

Q: Draw the product of the Robinson annulation reaction that occurs when the

Draw the product of the Robinson annulation reaction that occurs when the following compounds are treated with aqueous sodium hydroxide:

Q: Circle the isoprene units in each of the following compounds:

Circle the isoprene units in each of the following compounds:

Q: Determine whether each of the following compounds is a terpene:

Determine whether each of the following compounds is a terpene:

Q: Draw a mechanism for the following transformation: /

Draw a mechanism for the following transformation:

Q: Draw a mechanism for the biosynthesis of α-farnesene starting with

Draw a mechanism for the biosynthesis of α-farnesene starting with dimethylallyl pyrophosphate and isopentenyl pyrophosphate.