Technology Process of (2E,9E,11E,18E,20E,22E)-(5S,7R,8R,13S,15R,16S,17R)-7,13-Bis-benzyloxy-5-(2-benzyloxy-ethyl)-15-hydroxy-17-methoxy-8,12,16,18,22-pentamethyl-23-(2-methyl-oxazol-4-yl)-tricosa-2,9,11,18,20,22-hexaenoic acid
There total 48 articles about (2E,9E,11E,18E,20E,22E)-(5S,7R,8R,13S,15R,16S,17R)-7,13-Bis-benzyloxy-5-(2-benzyloxy-ethyl)-15-hydroxy-17-methoxy-8,12,16,18,22-pentamethyl-23-(2-methyl-oxazol-4-yl)-tricosa-2,9,11,18,20,22-hexaenoic acid which
guide to synthetic route it.
The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:
synthetic route:
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4-Nitro-benzoic acid (4E,6E,13E)-(1R,3S,8R,9R,11S)-3,9-bis-benzyloxy-11-(2-benzyloxy-ethyl)-14-ethoxycarbonyl-1-[(3E,5E,7E)-(1S,2R)-2-methoxy-1,3,7-trimethyl-8-(2-methyl-oxazol-4-yl)-octa-3,5,7-trienyl]-4,8-dimethyl-tetradeca-4,6,13-trienyl ester
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544429-45-0
(2E,9E,11E,18E,20E,22E)-(5S,7R,8R,13S,15R,16S,17R)-7,13-Bis-benzyloxy-5-(2-benzyloxy-ethyl)-15-hydroxy-17-methoxy-8,12,16,18,22-pentamethyl-23-(2-methyl-oxazol-4-yl)-tricosa-2,9,11,18,20,22-hexaenoic acid
- Guidance literature:
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With
potassium trimethylsilonate;
DOI:10.1021/jo034011x
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544429-45-0
(2E,9E,11E,18E,20E,22E)-(5S,7R,8R,13S,15R,16S,17R)-7,13-Bis-benzyloxy-5-(2-benzyloxy-ethyl)-15-hydroxy-17-methoxy-8,12,16,18,22-pentamethyl-23-(2-methyl-oxazol-4-yl)-tricosa-2,9,11,18,20,22-hexaenoic acid
- Guidance literature:
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Multi-step reaction with 19 steps
1.1: diisopropylamine; n-BuLi / tetrahydrofuran / 1 h / -78 °C
1.2: 78 percent / tetrahydrofuran / 0.08 h
2.1: (-)-diisopropyl tartrate; Ti(O-iPr)4; tert-butylhydroperoxide / molecular sieves 3 Angstroem / CH2Cl2 / 20 h / -20 °C
2.2: 40 percent / FeSO4; citric acid / H2O; CH2Cl2
3.1: 76 percent / TfOH
4.1: DIBAL-H
5.1: dibutylboron triflate; diisopropylethylamine / CH2Cl2 / 0.25 h / 0 °C
5.2: CH2Cl2 / 3 h / -78 °C
5.3: 89 percent / sodium acetate; hydrogen peroxide / methanol; CH2Cl2; H2O / 1.5 h / 0 °C
6.1: 95 percent / trimethylaluminum / hexane; tetrahydrofuran / 0 - 20 °C
7.1: 100 percent / triethylamine / CH2Cl2 / 15 h / Heating
8.1: 93 percent / diisobutylaluminum hydride / tetrahydrofuran; toluene / 0.75 h / -78 °C
9.1: tert-butyllithium / tetrahydrofuran; pentane / 0.75 h / -78 °C
9.2: 89 percent / tetrahydrofuran; pentane / 0.25 h / -78 °C
10.1: 97 percent / Dess-Martin periodinane / CH2Cl2 / 0 - 20 °C
11.1: barium hydroxide octahydrate / tetrahydrofuran / 0.5 h / 20 °C
11.2: 65 percent / tetrahydrofuran; H2O / 16.5 h
12.1: 89 percent / citric acid / tetrahydrofuran; methanol / 1 h / 20 °C
13.1: 76 percent / diethylmethoxyborane; sodium borohydride / tetrahydrofuran; methanol / 3 h / -78 °C
14.1: 63 percent / NaH / tetrahydrofuran / 17 h / -78 - 20 °C
15.1: 82 percent / pyridine; 4-(dimethylamino)pyridine / 7 h
16.1: 87 percent / tetrabutylammonium fluoride / tetrahydrofuran / 3 h / 0 - 20 °C
17.1: Dess-Martin periodinane
18.1: 50 percent / LiHMDS
19.1: 69 percent / TMSO(1-)*K(1+)
With
pyridine; titanium(IV) isopropylate; tert.-butylhydroperoxide; dmap; sodium tetrahydroborate; n-butyllithium; barium hydroxide octahydrate; (-)-diisopropyl tartrate; trifluorormethanesulfonic acid; di-n-butylboryl trifluoromethanesulfonate; diethyl methoxy borane; potassium trimethylsilonate; tetrabutyl ammonium fluoride; trimethylaluminum; tert.-butyl lithium; sodium hydride; diisobutylaluminium hydride; Dess-Martin periodane; triethylamine; diisopropylamine; N-ethyl-N,N-diisopropylamine; citric acid; lithium hexamethyldisilazane;
3 A molecular sieve;
In
tetrahydrofuran; methanol; hexane; dichloromethane; toluene; pentane;
DOI:10.1021/jo034011x
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544429-45-0
(2E,9E,11E,18E,20E,22E)-(5S,7R,8R,13S,15R,16S,17R)-7,13-Bis-benzyloxy-5-(2-benzyloxy-ethyl)-15-hydroxy-17-methoxy-8,12,16,18,22-pentamethyl-23-(2-methyl-oxazol-4-yl)-tricosa-2,9,11,18,20,22-hexaenoic acid
- Guidance literature:
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Multi-step reaction with 18 steps
1.1: (-)-diisopropyl tartrate; Ti(O-iPr)4; tert-butylhydroperoxide / molecular sieves 3 Angstroem / CH2Cl2 / 20 h / -20 °C
1.2: 40 percent / FeSO4; citric acid / H2O; CH2Cl2
2.1: 76 percent / TfOH
3.1: DIBAL-H
4.1: dibutylboron triflate; diisopropylethylamine / CH2Cl2 / 0.25 h / 0 °C
4.2: CH2Cl2 / 3 h / -78 °C
4.3: 89 percent / sodium acetate; hydrogen peroxide / methanol; CH2Cl2; H2O / 1.5 h / 0 °C
5.1: 95 percent / trimethylaluminum / hexane; tetrahydrofuran / 0 - 20 °C
6.1: 100 percent / triethylamine / CH2Cl2 / 15 h / Heating
7.1: 93 percent / diisobutylaluminum hydride / tetrahydrofuran; toluene / 0.75 h / -78 °C
8.1: tert-butyllithium / tetrahydrofuran; pentane / 0.75 h / -78 °C
8.2: 89 percent / tetrahydrofuran; pentane / 0.25 h / -78 °C
9.1: 97 percent / Dess-Martin periodinane / CH2Cl2 / 0 - 20 °C
10.1: barium hydroxide octahydrate / tetrahydrofuran / 0.5 h / 20 °C
10.2: 65 percent / tetrahydrofuran; H2O / 16.5 h
11.1: 89 percent / citric acid / tetrahydrofuran; methanol / 1 h / 20 °C
12.1: 76 percent / diethylmethoxyborane; sodium borohydride / tetrahydrofuran; methanol / 3 h / -78 °C
13.1: 63 percent / NaH / tetrahydrofuran / 17 h / -78 - 20 °C
14.1: 82 percent / pyridine; 4-(dimethylamino)pyridine / 7 h
15.1: 87 percent / tetrabutylammonium fluoride / tetrahydrofuran / 3 h / 0 - 20 °C
16.1: Dess-Martin periodinane
17.1: 50 percent / LiHMDS
18.1: 69 percent / TMSO(1-)*K(1+)
With
pyridine; titanium(IV) isopropylate; tert.-butylhydroperoxide; dmap; sodium tetrahydroborate; barium hydroxide octahydrate; (-)-diisopropyl tartrate; trifluorormethanesulfonic acid; di-n-butylboryl trifluoromethanesulfonate; diethyl methoxy borane; potassium trimethylsilonate; tetrabutyl ammonium fluoride; trimethylaluminum; tert.-butyl lithium; sodium hydride; diisobutylaluminium hydride; Dess-Martin periodane; triethylamine; N-ethyl-N,N-diisopropylamine; citric acid; lithium hexamethyldisilazane;
3 A molecular sieve;
In
tetrahydrofuran; methanol; hexane; dichloromethane; toluene; pentane;
DOI:10.1021/jo034011x