Sodium Hydroxide → (S)-4-((1R,3 aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-((2-((1S,4S)-2,2-dioxido-2-thia-5-azabicyclo[2.2.1]heptan-5-yl)ethyl)amino)-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)cyclohex-3-enecarboxylic acid

HRID 338661Notes

Reaction equation

HRID 338661 reaction equation
[O:1]=[S:2]1(=[O:57])[CH2:7][C@@H:6]2[CH2:8][C@H:3]1[CH2:4][N:5]2[CH2:9][CH2:10][NH:11][C@:12]12[CH2:53][CH2:52][C@@H:51]([C:54]([CH3:56])=[CH2:55])[C@@H:13]1[C@@H:14]1[C@@:27]([CH3:30])([CH2:28][CH2:29]2)[C@@:26]2([CH3:31])[C@@H:17]([C@:18]3([CH3:50])[C@@H:23]([CH2:24][CH2:25]2)[C:22]([CH3:33])([CH3:32])[C:21]([C:34]2[CH2:39][CH2:38][C@H:37]([C:40]([O:42]CC4C=CC=CC=4)=[O:41])[CH2:36][CH:35]=2)=[CH:20][CH2:19]3)[CH2:16][CH2:15]1.[OH-].[Na+]>C(#N)C>[O:57]=[S:2]1(=[O:1])[CH2:7][C@@H:6]2[CH2:8][C@H:3]1[CH2:4][N:5]2[CH2:9][CH2:10][NH:11][C@:12]12[CH2:53][CH2:52][C@@H:51]([C:54]([CH3:56])=[CH2:55])[C@@H:13]1[C@@H:14]1[C@@:27]([CH3:30])([CH2:28][CH2:29]2)[C@@:26]2([CH3:31])[C@@H:17]([C@:18]3([CH3:50])[C@@H:23]([CH2:24][CH2:25]2)[C:22]([CH3:32])([CH3:33])[C:21]([C:34]2[CH2:39][CH2:38][C@H:37]([C:40]([OH:42])=[O:41])[CH2:36][CH:35]=2)=[CH:20][CH2:19]3)[CH2:16][CH2:15]1

Participants

4

Reactant 2

HCID 14798Sodium HydroxideHCID 89893459(S)-benzyl 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-((2-((1S,45)-2,2-dioxido-2-thia-5-azabicyclo[2.2.1]heptan-5-yl)ethyl)amino)-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)cyclohex-3-enecarboxylate

Product 1

HCID 72201481(S)-4-((1R,3 aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-((2-((1S,4S)-2,2-dioxido-2-thia-5-azabicyclo[2.2.1]heptan-5-yl)ethyl)amino)-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)cyclohex-3-enecarboxylic acidYield 49.6%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Conditions

Temperature
80 °C

Procedure

A mixture of (S)-benzyl 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-((2-((1S,4S)-2,2-dioxido-2-thia-5-azabicyclo[2.2.1]heptan-5-yl)ethyl)amino)-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)cyclohex-3-enecarboxylate (5 mg, 6.27 μmol) and sodium hydroxide (0.063 mL, 0.063 mmol) in acetonitrile (1 mL) was heated up at 80° C. for 3 hours. The reaction mixture was filtered and purified by HPLC to provide (S)-4-((1R,3 aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-((2-((1S,4S)-2,2-dioxido-2-thia-5-azabicyclo[2.2.1]heptan-5-yl)ethyl)amino)-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)cyclohex-3-enecarboxylic acid (2.2 mg, 47% yield) as a white solid. LCMS: m/e 707.8 (M+H)+, 1.82 min (method 5). 1H NMR (400 MHz, Acetic) δ 5.37 (br. s., 1H), 5.22 (d, J=4.3 Hz, 1H), 4.80 (s, 1H), 4.70 (s, 1H), 4.10 (br. s., 1H), 3.79-3.65 (m, 1H), 3.50-3.32 (m, 3H), 3.28-3.00 (m, 5H), 2.93-2.75 (m, 1H), 2.56 (d, J=12.3 Hz, 2H), 2.49-2.39 (m, 1H), 2.32 (br. s., 2H), 2.23-1.10 (m, 26H), 1.72 (s, 3H), 1.16 (s, 3H), 1.07 (s, 3H), 1.00 (s, 3H), 0.94 (s, 3H), 0.92 (s, 3H).

Workup

  1. filtrationThe reaction mixture was filtered
  2. custompurified by HPLC

Sources & evidence

ORD record
ord-a20aed1009384066a2a27bec0ff7e252
Source dataset
uspto-grants-2014_11
Patent number
US08889854B2

Reaction notes

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