methyl 3-fluoro-4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-formyl-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysen-9-yl)-benzoate

Base Information

Chemical Name:methyl 3-fluoro-4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-formyl-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysen-9-yl)-benzoate
CAS No.:1392113-39-1
Molecular Formula:C₃₈H₅₁FO₃
Molecular Weight:574.82
Hs Code.:

methyl 3-fluoro-4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-formyl-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysen-9-yl)-benzoate

Synonyms:methyl 3-fluoro-4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-formyl-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysen-9-yl)-benzoate

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Chemical Property of methyl 3-fluoro-4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-formyl-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysen-9-yl)-benzoate

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Technology Process of methyl 3-fluoro-4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-formyl-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysen-9-yl)-benzoate

There total 6 articles about methyl 3-fluoro-4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-formyl-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysen-9-yl)-benzoate 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:

Reference yield:

: 1392113-37-9
methyl 3-fluoro-4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-(hydroxymethyl)-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysen-9-yl)-benzoate

: 1392113-39-1
methyl 3-fluoro-4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-formyl-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysen-9-yl)-benzoate

Guidance literature:: methyl 3-fluoro-4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-(hydroxymethyl)-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysen-9-yl)-benzoate; With oxalyl dichloride; dimethyl sulfoxide; In dichloromethane; at -50 ℃; for 0.25h; Inert atmosphere;

With triethylamine; In dichloromethane; at 20 ℃;

Reference yield:

: 473-98-3
betulin

: 1392113-39-1
methyl 3-fluoro-4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-formyl-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysen-9-yl)-benzoate

Guidance literature:: Multi-step reaction with 7 steps

1.1: pyridine / dmap / 50 °C / Inert atmosphere

1.2: 5 h / 50 °C

2.1: pyridinium chlorochromate / dichloromethane / 7.25 h / 20 °C / Inert atmosphere

3.1: potassium hexamethylsilazane / tetrahydrofuran / 0.25 h / -78 °C / Inert atmosphere

3.2: 4.5 h / -78 °C

4.1: sodium carbonate / tetrakis(triphenylphosphine) palladium⁽⁰⁾ / isopropyl alcohol; 1,4-dioxane; water / 4 h / Reflux; Inert atmosphere

5.1: water; lithium hydroxide monohydrate / 1,4-dioxane / 72 h / 75 °C / Inert atmosphere

6.1: methanol / dichloromethane; hexane / 96 h / 20 °C / Inert atmosphere

7.1: oxalyl dichloride; dimethyl sulfoxide / dichloromethane / 0.25 h / -50 °C / Inert atmosphere

7.2: 20 °C

With pyridine; methanol; oxalyl dichloride; lithium hydroxide monohydrate; water; potassium hexamethylsilazane; sodium carbonate; dimethyl sulfoxide; pyridinium chlorochromate; dmap; tetrakis(triphenylphosphine) palladium⁽⁰⁾; In tetrahydrofuran; 1,4-dioxane; hexane; dichloromethane; water; isopropyl alcohol; 4.1: Suzuki Coupling;

Reference yield:

: 1350915-24-0
((1R,3aS,5aR,5bR,7aR,9S,11aR,11bR,13aR,13bR)-9-hydroxy-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)icosahydro-1H-cyclopenta[a]chrysen-3a-yl)methyl benzoate

: 1392113-39-1
methyl 3-fluoro-4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-formyl-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysen-9-yl)-benzoate

Guidance literature:: Multi-step reaction with 6 steps

1.1: pyridinium chlorochromate / dichloromethane / 7.25 h / 20 °C / Inert atmosphere

2.1: potassium hexamethylsilazane / tetrahydrofuran / 0.25 h / -78 °C / Inert atmosphere

2.2: 4.5 h / -78 °C

3.1: sodium carbonate / tetrakis(triphenylphosphine) palladium⁽⁰⁾ / isopropyl alcohol; 1,4-dioxane; water / 4 h / Reflux; Inert atmosphere

4.1: water; lithium hydroxide monohydrate / 1,4-dioxane / 72 h / 75 °C / Inert atmosphere

5.1: methanol / dichloromethane; hexane / 96 h / 20 °C / Inert atmosphere

6.1: oxalyl dichloride; dimethyl sulfoxide / dichloromethane / 0.25 h / -50 °C / Inert atmosphere

6.2: 20 °C

With methanol; oxalyl dichloride; lithium hydroxide monohydrate; water; potassium hexamethylsilazane; sodium carbonate; dimethyl sulfoxide; pyridinium chlorochromate; tetrakis(triphenylphosphine) palladium⁽⁰⁾; In tetrahydrofuran; 1,4-dioxane; hexane; dichloromethane; water; isopropyl alcohol; 3.1: Suzuki Coupling;