(R)-3,5-Dihydroxy-7-[(1S,2S,8S,8aR)-2-methyl-8-((S)-2-methyl-butyryloxy)-1,2,6,7,8,8a-hexahydro-naphthalen-1-yl]-heptanoic acid methyl ester

Base Information

• Chemical Name: (R)-3,5-Dihydroxy-7-[(1S,2S,8S,8aR)-2-methyl-8-((S)-2-methyl-butyryloxy)-1,2,6,7,8,8a-hexahydro-naphthalen-1-yl]-heptanoic acid methyl ester
• CAS No.: 79896-21-2
• Molecular Formula: C₂₄H₃₈O₆
• Molecular Weight: 422.562
• Mol file: 79896-21-2.mol

Synonyms:

Chemical Property of (R)-3,5-Dihydroxy-7-[(1S,2S,8S,8aR)-2-methyl-8-((S)-2-methyl-butyryloxy)-1,2,6,7,8,8a-hexahydro-naphthalen-1-yl]-heptanoic acid methyl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (R)-3,5-Dihydroxy-7-[(1S,2S,8S,8aR)-2-methyl-8-((S)-2-methyl-butyryloxy)-1,2,6,7,8,8a-hexahydro-naphthalen-1-yl]-heptanoic acid methyl ester

There total 89 articles about (R)-3,5-Dihydroxy-7-[(1S,2S,8S,8aR)-2-methyl-8-((S)-2-methyl-butyryloxy)-1,2,6,7,8,8a-hexahydro-naphthalen-1-yl]-heptanoic acid methyl ester 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: 63.0%

5-Hydroxy-7-[(1S,2S,8S,8aR)-2-methyl-8-((S)-2-methyl-butyryloxy)-1,2,6,7,8,8a-hexahydro-naphthalen-1-yl]-3-oxo-heptanoic acid methyl ester (79782-56-2,79782-57-3,85738-03-0) → 3,5-Dihydroxy-7-[(1S,2S,8S,8aR)-2-methyl-8-((S)-2-methyl-butyryloxy)-1,2,6,7,8,8a-hexahydro-naphthalen-1-yl]-heptanoic acid methyl ester (67383-81-7,79814-60-1,79896-19-8,79896-20-1,79896-21-2,109785-25-3,109785-26-4)

Guidance literature:

With zinc(II) tetrahydroborate; In hexane; at 0 ℃; for 1h;

DOI:10.1021/ja00411a063

Reference yield:

1β,4α-bis(benzyloxy)-1,2,3,4,4aβ,5,8,8aα-octahydronaphthalene (84131-75-9) → (S)-3,5-Dihydroxy-7-[(1S,2S,8S,8aR)-2-methyl-8-((S)-2-methyl-butyryloxy)-1,2,6,7,8,8a-hexahydro-naphthalen-1-yl]-heptanoic acid methyl ester (67383-81-7,79814-60-1,79896-19-8,79896-20-1,79896-21-2,109785-25-3,109785-26-4)

Guidance literature:

Multi-step reaction with 19 steps

1: 32 g / acetic acid / 1 h / 25 °C

2: 88 percent / 4percent KOH / methanol; diethyl ether / 2 h / 25 °C

3: 30percent H₂O₂ / tetrahydrofuran; H₂O / 2.5 h / 25 °C

4: tetrahydrofuran; H₂O / 2 h / 55 °C

5: 20.6 g / Jones reagent / tetrahydrofuran; H₂O; acetone / 0.25 h

6: 1.) THF, -20 deg C, 30 min, 2.) -78 deg C

7: 38 g / Et₃N / CH₂Cl₂ / 0.5 h / -5 °C

8: 28.09 g / DBU / benzene / 1 h / 25 °C

9: 78 percent / H₂ / 10percent Pd/C / benzene; pyridine / 0.67 h / 25 °C

10: Et₃N, Na₂SO₄ / ethanol / 7 h / 25 °C

11: 5.3 g / LDA / tetrahydrofuran; hexane / -78 deg C -> 0 deg C, 1 h; 0 deg C, 4 h

12: 100 percent / Li, NH₃ liq. / tetrahydrofuran / 0.5 h

13: 1 mg / 4-(dimethylamino)pyridine / pyridine / 16 h / 25 °C

14: 2.8 g / pyridine / 8 h / 0 °C

15: 1.8 g / DBU / pyridine / 3 h / Heating

16: 1.44 g / acetic acid; tetrahydrofuran; H₂O / 8 h / 25 °C

17: 65 percent / pyridinium chlorochromate / CH₂Cl₂ / 4 h / 25 °C

18: 1.) NaH, 2.) n-BuLi / 1.) THF, 0 deg C, 10 min, 2.) THF-hexane, 0 deg C, 10 min, 3.) 0 deg C, 15 min

19: 16 mg / Zn(BH₄)2 / diethyl ether / 1 h / 25 °C

With dmap; potassium hydroxide; n-butyllithium; jones reagent; zinc(II) tetrahydroborate; ammonia; hydrogen; dihydrogen peroxide; lithium; sodium hydride; 1,8-diazabicyclo[5.4.0]undec-7-ene; sodium sulfate; triethylamine; pyridinium chlorochromate; lithium diisopropyl amide; palladium on activated charcoal; In tetrahydrofuran; pyridine; methanol; diethyl ether; ethanol; hexane; dichloromethane; water; acetic acid; acetone; benzene;

DOI:10.1021/ja00341a046

Reference yield:

1β,4α-bis(benzyloxy)-1,2,3,4,4aβ,5,8,8aα-octahydronaphthalene (84131-75-9) → (R)-3,5-Dihydroxy-7-[(1S,2S,8S,8aR)-2-methyl-8-((S)-2-methyl-butyryloxy)-1,2,6,7,8,8a-hexahydro-naphthalen-1-yl]-heptanoic acid methyl ester (67383-81-7,79814-60-1,79896-19-8,79896-20-1,79896-21-2,109785-25-3,109785-26-4)

Guidance literature:

Multi-step reaction with 19 steps

1: 32 g / acetic acid / 1 h / 25 °C

2: 88 percent / 4percent KOH / methanol; diethyl ether / 2 h / 25 °C

3: 30percent H₂O₂ / tetrahydrofuran; H₂O / 2.5 h / 25 °C

4: tetrahydrofuran; H₂O / 2 h / 55 °C

5: 20.6 g / Jones reagent / tetrahydrofuran; H₂O; acetone / 0.25 h

6: 1.) THF, -20 deg C, 30 min, 2.) -78 deg C

7: 38 g / Et₃N / CH₂Cl₂ / 0.5 h / -5 °C

8: 28.09 g / DBU / benzene / 1 h / 25 °C

9: 78 percent / H₂ / 10percent Pd/C / benzene; pyridine / 0.67 h / 25 °C

10: Et₃N, Na₂SO₄ / ethanol / 7 h / 25 °C

11: 5.3 g / LDA / tetrahydrofuran; hexane / -78 deg C -> 0 deg C, 1 h; 0 deg C, 4 h

12: 100 percent / Li, NH₃ liq. / tetrahydrofuran / 0.5 h

13: 1 mg / 4-(dimethylamino)pyridine / pyridine / 16 h / 25 °C

14: 2.8 g / pyridine / 8 h / 0 °C

15: 1.8 g / DBU / pyridine / 3 h / Heating

16: 1.44 g / acetic acid; tetrahydrofuran; H₂O / 8 h / 25 °C

17: 65 percent / pyridinium chlorochromate / CH₂Cl₂ / 4 h / 25 °C

18: 1.) NaH, 2.) n-BuLi / 1.) THF, 0 deg C, 10 min, 2.) THF-hexane, 0 deg C, 10 min, 3.) 0 deg C, 15 min

19: 34 mg / Zn(BH₄)2 / diethyl ether / 1 h / 25 °C

With dmap; potassium hydroxide; n-butyllithium; jones reagent; zinc(II) tetrahydroborate; ammonia; hydrogen; dihydrogen peroxide; lithium; sodium hydride; 1,8-diazabicyclo[5.4.0]undec-7-ene; sodium sulfate; triethylamine; pyridinium chlorochromate; lithium diisopropyl amide; palladium on activated charcoal; In tetrahydrofuran; pyridine; methanol; diethyl ether; ethanol; hexane; dichloromethane; water; acetic acid; acetone; benzene;

DOI:10.1021/ja00341a046

upstream raw materials:

5-Hydroxy-7-[(1S,2S,8S,8aR)-2-methyl-8-(2-methyl-butyryloxy)-1,2,6,7,8,8a-hexahydro-naphthalen-1-yl]-3-oxo-heptanoic acid methyl ester

(4aR,5S,8R,8aS)-5-Hydroxy-8-methoxy-4a,5,6,7,8,8a-hexahydro-1H-naphthalen-2-one

Acetic acid (1R,4S,4aR,5S,6S,8aS)-5-allyl-4-hydroxy-6-methyl-1,2,3,4,4a,5,6,8a-octahydro-naphthalen-1-yl ester

(4aR,5S,8R,8aS)-8-Methoxy-5-trimethylsilanyloxy-4a,5,6,7,8,8a-hexahydro-1H-naphthalen-2-one

Downstream raw materials:

(+/-) compactin

mevastatin

3,5-bis-epi-compactin

3-epi-compactin