ethyl 4-benzyl-4-((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]chrysene-3a-carbonyl)piperidine-4-carboxylate

Base Information

Chemical Name:ethyl 4-benzyl-4-((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]chrysene-3a-carbonyl)piperidine-4-carboxylate
CAS No.:1261253-30-8
Molecular Formula:C₄₅H₆₇NO₄
Molecular Weight:686.031
Hs Code.:

ethyl 4-benzyl-4-((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]chrysene-3a-carbonyl)piperidine-4-carboxylate

Synonyms:ethyl 4-benzyl-4-((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]chrysene-3a-carbonyl)piperidine-4-carboxylate

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Chemical Property of ethyl 4-benzyl-4-((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]chrysene-3a-carbonyl)piperidine-4-carboxylate

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Technology Process of ethyl 4-benzyl-4-((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]chrysene-3a-carbonyl)piperidine-4-carboxylate

There total 8 articles about ethyl 4-benzyl-4-((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]chrysene-3a-carbonyl)piperidine-4-carboxylate 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:

: 1261253-29-5
ethyl 1-((1R,3aS,5aR,5bR,7aR,9S,11aR,11bR,13aR,13bR)-9-acetoxy-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)icosahydro-1H-cyclopenta[a]chrysene-3a-carbonyl)-4-benzylcypiperidine-4-carboxylate

: 1261253-30-8
ethyl 4-benzyl-4-((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]chrysene-3a-carbonyl)piperidine-4-carboxylate

Guidance literature:: With water; sodium hydroxide; In tetrahydrofuran; methanol; at 0 - 20 ℃; for 6h;

Reference yield:

Betulinic acid: 472-15-1
Betulinic acid

: 1261253-30-8
ethyl 4-benzyl-4-((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]chrysene-3a-carbonyl)piperidine-4-carboxylate

Guidance literature:: Multi-step reaction with 4 steps

1: dmap; pyridine / 24 h / 0 - 20 °C / Reflux

2: oxalyl dichloride / dichloromethane / 2 h / 0 - 20 °C

3: triethylamine / dichloromethane / 8 h / 20 °C

4: sodium hydroxide; water / tetrahydrofuran; methanol / 6 h / 0 - 20 °C

With pyridine; dmap; oxalyl dichloride; water; triethylamine; sodium hydroxide; In tetrahydrofuran; methanol; dichloromethane;

Reference yield:

: 167263-10-7
4-benzyl-piperidine-1,4-dicarboxylic acid 1-tert-butyl ester 4-ethyl ester

: 1261253-30-8
ethyl 4-benzyl-4-((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]chrysene-3a-carbonyl)piperidine-4-carboxylate

Guidance literature:: Multi-step reaction with 3 steps

1: trifluoroacetic acid / dichloromethane / 6 h / 20 °C

2: triethylamine / dichloromethane / 8 h / 20 °C

3: sodium hydroxide; water / tetrahydrofuran; methanol / 6 h / 0 - 20 °C

With water; triethylamine; trifluoroacetic acid; sodium hydroxide; In tetrahydrofuran; methanol; dichloromethane;