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Draw each of the following:

  1. 尾-顿-迟补濒辞辫测谤补苍辞蝉别 c. 伪-顿-迟补驳补迟辞辫测谤补苍辞蝉别 e. 尾-L-talopyranose

b. 伪-顿-颈诲辞辫测谤补苍辞蝉别 d. 尾-顿-辫蝉颈肠辞蹿耻谤补苍辞蝉别 f. 伪-尝-迟补驳补迟辞辫测谤补苍辞蝉别

Short Answer

Expert verified

These are the chair conformations of the given molecules. Alpha and beta substitutions represent that the substitutions are at first and second carbon atom.

a.


尾-D- talopyranose

b.

伪-顿-颈诲辞辫测谤补苍辞蝉别

c.

伪 -D-tagatopyranose

d.

尾 -D-psicofuranose

e.

尾 - D-talopyranose

f.

伪 - L-tagatopyranose

Step by step solution

01

Structure of β-D-talopyranose

Generally, pyranose is a six-membered structure which has five carbon atoms and one oxygen atom. 尾-顿-迟补濒辞辫测谤补苍辞蝉别 is the substituted pyranose ring. Each carbon atom has hydroxyl group as substituents attached to it. The structure of 尾-顿-迟补濒辞辫测谤补苍辞蝉别 is shown below:

尾 - D-talopyranose

02

Step 2: Structure of α-D-idopyranose

The structure of 伪-顿-颈诲辞辫测谤补苍辞蝉别 is given below:

伪-顿-颈诲辞辫测谤补苍辞蝉别

Here, C6 has -CH2OH group and other carbon atoms are attached to -OH group.

03

Structure of α-D-tagatopyranose

The structure of 伪-顿-迟补驳补迟辞辫测谤补苍辞蝉别 is given below:

伪-顿-迟补驳补迟辞辫测谤补苍辞蝉别

C2 has a -CH2OH group and a -OH group. Other carbon atoms have -OH groups attached to it.

04

Structure of β-D-psicofuranose

The structure of 尾-顿-辫蝉颈肠辞蹿耻谤补苍辞蝉别 is shown below:

尾-顿-辫蝉颈肠辞蹿耻谤补苍辞蝉别

Generally, furanose is a five membered structure having four carbon atoms and one oxygen atom. Here, two carbon atoms have -CH2OH groups and other two carbon atoms have - OH group and -Hgroup.

05

Structure of β-L-talopyranose

The structure of 尾-顿-迟补濒辞辫测谤补苍辞蝉别 is shown below:

尾-顿-迟补濒辞辫测谤补苍辞蝉别

Here, C1 has group -CH2OH and others have -OH group.

06

Structure of α-L-tagatopyranose

The structure of 伪-尝-迟补驳补迟辞辫测谤补苍辞蝉别 is given below:

伪-尝-迟补驳补迟辞辫测谤补苍辞蝉别

Thus all the structures are drawn above.

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