Technology Process of Benzoic acid (3S,5S,7S,8S,9S,10R,14S,16S)-17-furan-3-yl-3-hydroxy-7-methoxymethoxy-4,4,8,10-tetramethyl-2,3,4,5,6,7,8,9,10,11,12,14,15,16-tetradecahydro-1H-cyclopenta[a]phenanthren-16-yl ester
There total 14 articles about Benzoic acid (3S,5S,7S,8S,9S,10R,14S,16S)-17-furan-3-yl-3-hydroxy-7-methoxymethoxy-4,4,8,10-tetramethyl-2,3,4,5,6,7,8,9,10,11,12,14,15,16-tetradecahydro-1H-cyclopenta[a]phenanthren-16-yl ester which
guide to synthetic route it.
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synthetic route:
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125417-29-0,125417-31-4
(3S,5S,7S,8S,9S,10R,14S,16R)-17-Furan-3-yl-7-methoxymethoxy-4,4,8,10-tetramethyl-2,3,4,5,6,7,8,9,10,11,12,14,15,16-tetradecahydro-1H-cyclopenta[a]phenanthrene-3,16-diol
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125417-30-3
Benzoic acid (3S,5S,7S,8S,9S,10R,14S,16S)-17-furan-3-yl-3-hydroxy-7-methoxymethoxy-4,4,8,10-tetramethyl-2,3,4,5,6,7,8,9,10,11,12,14,15,16-tetradecahydro-1H-cyclopenta[a]phenanthren-16-yl ester
- Guidance literature:
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With
triphenylphosphine; diethylazodicarboxylate;
In
tetrahydrofuran;
at 23 ℃;
for 3h;
DOI:10.1016/S0040-4039(00)99392-4
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125417-30-3
Benzoic acid (3S,5S,7S,8S,9S,10R,14S,16S)-17-furan-3-yl-3-hydroxy-7-methoxymethoxy-4,4,8,10-tetramethyl-2,3,4,5,6,7,8,9,10,11,12,14,15,16-tetradecahydro-1H-cyclopenta[a]phenanthren-16-yl ester
- Guidance literature:
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Multi-step reaction with 5 steps
1: 1.) sodium ethoxide; 2.) 12N HCl / 1.) EtOH, reflux, 20 min.; 2.) 10 deg C
2: 92 percent / 1 M sodium ethoxide / ethanol / 0.75 h / 70 °C
3: 92 percent / tetrabutylammonium iodide, diisopropylethylamine / acetonitrile / 7 h / 70 °C
4: lithium tri-sec-butylborohydride / tetrahydrofuran / 0.5 h / -78 °C
5: diethyl azodicarboxylate, triphenylphosphine / tetrahydrofuran / 3 h / 23 °C
With
hydrogenchloride; sodium ethanolate; tetra-(n-butyl)ammonium iodide; L-Selectride; N-ethyl-N,N-diisopropylamine; triphenylphosphine; diethylazodicarboxylate;
In
tetrahydrofuran; ethanol; acetonitrile;
DOI:10.1016/S0040-4039(00)99392-4
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125417-30-3
Benzoic acid (3S,5S,7S,8S,9S,10R,14S,16S)-17-furan-3-yl-3-hydroxy-7-methoxymethoxy-4,4,8,10-tetramethyl-2,3,4,5,6,7,8,9,10,11,12,14,15,16-tetradecahydro-1H-cyclopenta[a]phenanthren-16-yl ester
- Guidance literature:
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Multi-step reaction with 13 steps
1: 86 percent / aq. CrO3, sulfuric acid / acetone / 0 °C
2: 1.) sodium hydride / 1.) reflux, THF, 1 h; 2.) 0 deg C, 10 min
3: 87 percent / p-toluenesulfonic acid / benzene / Heating
4: 90 percent / diisobutylaluminium hydride / toluene / 0.5 h / -20 °C
5: HO3SONO / pyridine / 0.5 h / 0 °C
6: 28 percent / CH2Cl2 / 50 °C / Irradiation
7: 1 N HCl, acetaldehyde / 12 h / 23 °C
8: tetramethylammonium triacetoxyborohydride / acetone; acetic acid / 0.33 h / -78 °C
9: 1.) sodium ethoxide; 2.) 12N HCl / 1.) EtOH, reflux, 20 min.; 2.) 10 deg C
10: 92 percent / 1 M sodium ethoxide / ethanol / 0.75 h / 70 °C
11: 92 percent / tetrabutylammonium iodide, diisopropylethylamine / acetonitrile / 7 h / 70 °C
12: lithium tri-sec-butylborohydride / tetrahydrofuran / 0.5 h / -78 °C
13: diethyl azodicarboxylate, triphenylphosphine / tetrahydrofuran / 3 h / 23 °C
With
chromium(VI) oxide; hydrogenchloride; nitrosylsulfuric acid; sulfuric acid; sodium ethanolate; tetra-(n-butyl)ammonium iodide; L-Selectride; sodium hydride; diisobutylaluminium hydride; toluene-4-sulfonic acid; acetaldehyde; N-ethyl-N,N-diisopropylamine; triphenylphosphine; tetramethylammonium triacetoxyborohydride; diethylazodicarboxylate;
In
tetrahydrofuran; pyridine; ethanol; dichloromethane; acetic acid; acetone; toluene; acetonitrile; benzene;
DOI:10.1016/S0040-4039(00)99392-4