4. Put an asterisk (*) next to each chiral center in the structure of erythronolide B,...
(23 pts.) Signature Label each stereocenter (chiral center) as Rors Labelech molecules chilor achiral Есі: CHS нон H- CH • OH р-н h) CH2OH в неон но -н нон ён,он CH2OH н -он но-де-н н- он снон achiral Chiral
4. (26 points) Identify each chiral carbon in the molecules below with an asterisk (*) and assign R or s absolute configuration to each chiral carbon. Then, state (in the box provided) whether the molecules are enantiomers, identical, diastereomers, or not related. Hint: if it looks like a Fischer projection then it is a Fischer projection. ...1111 O піон аnd and .Ley O Era o C CHO CH,OH C. H oH and OHCH IH Сн,он
6.(14) Determine the absolute configuration (R or S) for each chiral center in the following pairs of molecules. Also determine if the pairs are identical, enantiomers or diastereomers. CH3 ŅH uta ÇO2H a) b) & 11 CO2H & HO OH NH CH3 CH2 Cl -H CH3 CH3
chiral center in the following molecules with an asterisk. How many stereo 136 Mark each chir wers are possible for each molecules OH LCHCHCOOH CH, -COOH (b) CH-COOH HỌ CHCOOH но он
1. Assign R or S configuration to each indicated chirality center (carbon A and B) in the following molecule (vitamin C). Which of the following assignments is correct? но OH HO H. a. carbon A (R); carbon B (S) b. carbon A (R); carbon B (R) c. carbon A (S); carbon B (R) d. carbon A (S); carbon B (S) 2. Erythronolide B is the biological precursor of erythromycin, a broad-spectrum antibiotic. How many chirality centers does erythronolide B have?...
3.18 Mark each chiral center in the following molecules with an asterisk. How many stereoi- somers are possible for each molecule? CH COOH CH (a) CH,CCHCH, (b) HCOH (c) CH CHCHCOOH (d) CHCCH.CH, он CH, NH, CH,OH ОН CH,COOH le) HCOH (6) CH CH.CHCHCH, (g) HOCCOOH CH,OH CH,COOH
3.26 Mark each chiral center in the following molecules with an asterisk. How many stereo isomers are possible for each molecule? OH (а) CHCHCHCоон но он CH, — соон b) CHнсоон но-СН-СООН (c)
1. For each of the structure star asymmetric carbon atoms, Lab with R and Sand draw any internal mirror plane of symmetry and label chiral or achiral molecules and meso structures H3C CH2Br OH I Br H -ОН HOH CI Н. TH Br H Br H OH HH CH2Br CH2CH3 a b C Br Br CI CI d СН3 CH3 CH3 ...Н H ОН CHз CHз нас CH3 f е
4 a) Identify which molecules are chiral and which are achiral. For the chiral molecules stale the maximum mumber of possihle sterooisomers thal are possible for he molocales polats) H H coH EL b) For the following pairs of molecules give the confimuration of each chiral center aand indicate the relatioeship between the two molecules as enantiomers, diastereomers or same molecule: (13 points) H .CHs H. CM3 C 3 (O,H N CHs C9H NHs -H H -H + Ch H...
1. (23 pts.) Label each stereocenter (chiral center) as Ror S. Label each molecule as chiral or achiral. CH ен-он H- CH3 . Он CH2OH Сн,он h) н он В ньон нон НО-Б-н ен,он но- н H-LOH CH OH