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Which of the choices correctly shows the numbering of the steroid nucleus?

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Which of the choices correctly shows the numbering of the steroid nucleus?

Question 1.

In estrone the B-C ring fusion is ________ and the C-D ring fusion is ________.

The structure of estrone has a SMILES string of C[C@]12CC[C@@H]3c4ccc(cc4CC[C@H]3[C@@H]1CCC2=O)O, in which the benzene ring is labeled, A, the cyclohexane rings are labeled, B and C, and the cyclopentane ring is labeled, D.

The structure of estrone has a SMILES string of C[C@]12CC[C@@H]3c4ccc(cc4CC[C@H]3[C@@H]1CCC2=O)O, in which the benzene ring is labeled, A, the cyclohexane rings are labeled, B and C, and the cyclopentane ring is labeled, D.

▸ cis; cis

▸ trans; cis

▸ trans; trans

▸ cis; trans

▸ both cis and trans; both cis and trans

Question 2.

Which of the choices correctly shows the numbering of the steroid nucleus?

An illustration shows two similar structures, labeled

An illustration shows two similar structures, labeled

An illustration shows two similar structures, labeled

▸ I

▸ II

▸ III

▸ IV

▸ none of these

Textbook

Organic Chemistry

Organic Chemistry

Edition: 4^th

Author: Klein

Read 58 times

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