4-Toluenesulfonyl chloride → N-(27-oleovloxyheptacosanoyl)-phytosphingosine

HRID 1005617Notes

Reaction equation

HRID 1005617 reaction equation
[C:1]([O:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][CH2:37][CH2:38][CH2:39][CH2:40][CH2:41][CH2:42][CH2:43][CH2:44][CH2:45][CH2:46][C:47]([OH:49])=O)(=[O:19])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8]/[CH:9]=[CH:10]\[CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH3:18].C(N(CC)CC)C.C1(C)C=CC(S(Cl)(=O)=O)=CC=1.[OH:68][CH2:69][C@@H:70]([C@@H:72]([C@@H:74]([CH2:76][CH2:77][CH2:78][CH2:79][CH2:80][CH2:81][CH2:82][CH2:83][CH2:84][CH2:85][CH2:86][CH2:87][CH2:88][CH3:89])[OH:75])[OH:73])[NH2:71]>C(Cl)(Cl)Cl>[C:1]([O:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][CH2:37][CH2:38][CH2:39][CH2:40][CH2:41][CH2:42][CH2:43][CH2:44][CH2:45][CH2:46][C:47]([NH:71][C@H:70]([C@@H:72]([C@@H:74]([CH2:76][CH2:77][CH2:78][CH2:79][CH2:80][CH2:81][CH2:82][CH2:83][CH2:84][CH2:85][CH2:86][CH2:87][CH2:88][CH3:89])[OH:75])[OH:73])[CH2:69][OH:68])=[O:49])(=[O:19])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8]/[CH:9]=[CH:10]\[CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH3:18]

Participants

6

Reactant 4

HCID 73974-Toluenesulfonyl chlorideHCID 8471TriethylamineHCID 122121PhytosphingosineHCID 8675418727-Oleoyloxyheptacosanoic acid

Product 1

HCID 86754186N-(27-oleovloxyheptacosanoyl)-phytosphingosineYield 29.6%

Reagents, catalysts & solvents 1

HCID 6212ChloroformSolvent2×

Procedure

A solution of 27-oleoyloxy-heptacosanoic acid (2 g; 2.89 mmoles) in chloroform (30 ml) and triethylamine (1.6 ml; 11.5 mmoles) was added in 30 minutes to a stirred solution of 0.5 grams of p-toluenesulphonyl chloride (0.5 g; 2.6 mmoles) in chloroform (40 ml) under nitrogen while keeping the temperature at 50° C. After stirring for 1 hour at 50° C. phytosphingosine (0.8 g; 2.52 mmoles) was added and stirring was continued for 2 hours at 50° C. After cooling the mixture was washed with 50 ml of 0.5 N hydrochloric acid, 50 ml of water and brine respectively. The organic layer was evaporated in vacuum and the residue was crystallized from 50 ml of warm 2-propanol under nitrogen giving 2.03 grams of the impure title compound. Purification over 40 grams of silica gel (Flash 30-60 μm) with chloroform/methanol=9/1 and subsequent crystallization from 40 ml of hot isopropanol gave 0.74 g of the title compound.

Workup

  1. customat 50° C
  2. additionwas added
  3. temperatureAfter cooling the mixture
  4. washwas washed with 50 ml of 0.5 N hydrochloric acid, 50 ml of water and brine respectively
  5. customThe organic layer was evaporated in vacuum
  6. customthe residue was crystallized from 50 ml of warm 2-propanol under nitrogen giving 2.03 grams of the impure title compound
  7. customPurification over 40 grams of silica gel (Flash 30-60 μm)
  8. customwith chloroform/methanol=9/1 and subsequent crystallization from 40 ml of hot isopropanol

Sources & evidence

ORD record
ord-6fe2a98e52b043429ed90979f0201e52
Source dataset
uspto-grants-2000_04
Patent number
US06054599

Reaction notes

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