Write the open-chain structure of a four-carbon deoxy sugar.

Name: Chemistry
Author: McMurry
ISBN: 9781292336145

검증된 단계별 안내

Step 1: Understand that a deoxy sugar is a sugar molecule where one of the hydroxyl groups (-OH) is replaced by a hydrogen atom (H).

Step 2: Recognize that a four-carbon sugar is known as a tetrose. The simplest form of a tetrose is an aldotetrose, which has an aldehyde group at one end.

Step 3: Draw the basic structure of an aldotetrose, which includes four carbon atoms in a chain with an aldehyde group (CHO) at the first carbon and hydroxyl groups on the other carbons.

Step 4: Replace one of the hydroxyl groups (-OH) on the carbon chain with a hydrogen atom (H) to create the deoxy sugar. This can be done at any carbon except the one with the aldehyde group.

Step 5: Ensure the structure maintains the correct number of hydrogen atoms and bonds, resulting in a four-carbon deoxy sugar with the general formula C4H8O3.

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Deoxy Sugars

Deoxy sugars are carbohydrates that have lost one or more hydroxyl (-OH) groups, typically at the 2-position. In the case of a four-carbon deoxy sugar, this means that the sugar will have four carbon atoms and one less oxygen than its corresponding sugar. An example is 2-deoxy-D-ribose, which is a crucial component of RNA.

Open-Chain Structure

The open-chain structure of a sugar refers to its linear form, as opposed to its cyclic form. In this structure, the carbon atoms are connected in a straight chain, with functional groups such as aldehydes or ketones at one end. For a four-carbon deoxy sugar, the open-chain structure will consist of four carbon atoms linked by single bonds, with the appropriate hydrogen and oxygen atoms attached.

Structural Representation

Structural representation in chemistry involves depicting the arrangement of atoms within a molecule. For sugars, this includes showing the carbon backbone and the positions of functional groups. In drawing the open-chain structure of a four-carbon deoxy sugar, it is essential to accurately represent the carbon atoms, the absence of the hydroxyl group, and the placement of hydrogen atoms to reflect the correct molecular formula.