Question

ON e Oniversity Chem 2201-Exam 2 Halloween 2019 3. Palytoxin is a potent vasoconstrictor. Answer the following with a number or a formula. The number of stereogenic centers in palytoxin is: NAME page 2 (24 points) (do not count double bond isomers) The number of possible stereoisomers: (not double bond isomers) The number of possible enantionmers: (not double bond isomers) The number of possible diastereomers: (not double bond isomers) но Он OH но° Но, H2N "ОН "он он O ОН Но" "ОН OH он ОН HO Он но, OH "ОН ОН но Он OH о но Он OH но Но ОН O Н, но, "ОН Он Он HO., он HO Но он Но ОН он (23 points) 4. Draw the structure of the tosylate of 4-chloropent-(Z)-3-en-(R)-2-ol. Page 2 total 47

Answer 1

3.

Palytoxin :

• No. of Stereogenic centers in Palytoxin is 64 ( A Stereogenic center is a chiral center in which a carbon is attached to 4-different groups : Double bonds not counted).
• No. of possible stereo-isomers is   2⁶⁴ = 1.844674407*10¹⁹ (A molecule
  with 'n' chiral centers, the maximum number of stereoisomers possible is 2ⁿ

: Double bonds not counted ).

• No. of possible enantiomers is =2ⁿ⁻¹ = 2⁶³ -  = 9.223372037*10¹⁸ (A molecule
  with 'n' chiral centers, the maximum number of enantiomer possible is 2ⁿ⁻¹   and no. of enantiomer pairs = 2ⁿ⁻¹/2 = 2ⁿ⁻² =2⁶²  )
• No. of possible diastereomers is =  2ⁿ -2n =    2⁶⁴ -2 .  

4.

of tosylate structure u o له-2-رم --2- (2) - of 4 - mohut ر ہے ہو و ما H HCC رمد 27