Hydrochloric Acid → HCID 86660836, compound

HRID 406144Notes

Reaction equation

HRID 406144 reaction equation
[OH:1][C:2]1[C:7]2[C@@:8]3([OH:45])[C@@:21]([O:25][CH3:26])([C@H:22]([OH:24])[CH2:23][C:6]=2[CH:5]=[C:4]([CH3:46])[C:3]=1[C:47]([OH:49])=O)[C:20](=[O:27])[C:19]1[C:10](=[CH:11][C:12]2[C:13](=[O:43])[C:14]([NH:30][CH:31]4[C@H:36]([O:37][CH3:38])[C@H:35]([OH:39])[C@@H:34]([O:40][CH3:41])[C@H:33]([CH3:42])[O:32]4)=[CH:15][C:16](=[O:29])[C:17]=2[C:18]=1[OH:28])[C:9]3=[O:44].O.ON1C2C=CC=CC=2N=N1.[NH2:61][CH2:62][C:63]1[CH:64]=[N:65][CH:66]=[CH:67][CH:68]=1.[ClH:69]>C1COCC1.CO>[ClH:69].[OH:1][C:2]1[C:7]2[C:8]3([OH:45])[C:21]([O:25][CH3:26])([CH:22]([OH:24])[CH2:23][C:6]=2[CH:5]=[C:4]([CH3:46])[C:3]=1[C:47]([NH:61][CH2:62][C:63]1[CH:64]=[N:65][CH:66]=[CH:67][CH:68]=1)=[O:49])[C:20](=[O:27])[C:19]1[C:10](=[CH:11][C:12]2[C:13](=[O:43])[C:14]([NH:30][CH:31]4[C@H:36]([O:37][CH3:38])[C@H:35]([OH:39])[C@@H:34]([O:40][CH3:41])[C@H:33]([CH3:42])[O:32]4)=[CH:15][C:16](=[O:29])[C:17]=2[C:18]=1[OH:28])[C:9]3=[O:44]

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 310183-PyridinemethanamineHCID 27960291-Hydroxybenzotriazole hydrateHCID 67121425HCID 67121425, compound

Product 1

HCID 86660836HCID 86660836, compound

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

To a solution of (6R,6aS,14aR)-1,6,8,14a-tetrahydroxy-11-((3R,4R,5R,6S)-4-hydroxy-3,5-dimethoxy-6-methyltetrahydro-2H-pyran-2-ylamino)-6a-methoxy-3-methyl-7,9,12,14-tetraoxo-5,6,6a,7,9,12,14,14a-octahydrobenzo[a]tetracene-2-carboxylic acid (60 mg, 0.09 mmol) in THF (2 mL) was added polystyrene-carbodiimide (156 mg, 0.18 mmol), 1-hydroxybenzotriazole hydrate (24 mg, 0.18 mmol) and 3-(aminomethyl)pyridine (11 mg, 0.10 mmol). The reaction mixture was stirred at room temperature under nitrogen for 7 h. The reaction was filtered through a micro filter and concentrated. The crude material was purified by preparative HPLC (10:90 acetonitrile/water to 60:40 acetonitrile/water with 0.05% TFA over 10 min, then isocratic) to afford a dark red solid. The solid was dissolved in methanol (2 mL) and treated with HCl (0.20 mL, 1.25 M solution in methanol) at 0° C. The solution was concentrated and triturated with diethyl ether to afford 6R,6aS,14aR)-1,6,8,14a-tetrahydroxy-11-((3R,4R,5R,6S)-4-hydroxy-3,5-dimethoxy-6-methyltetrahydro-2H-pyran-2-ylamino)-6a-methoxy-3-methyl-7,9,12,14-tetraoxo-N-(pyridin-3-ylmethyl)-5,6,6a,7,9,12,14,14a-octahydrobenzo[a]tetracene-2-carboxamide hydrochloride as a mixture of diastereomers (12 mg, 21%) and as a red solid: 1H NMR (500 MHz, CD3OD) δ 8.84-8.80 (m, 1H), 8.80-8.65 (m, 1H), 8.64-8.58 (m, 1H), 8.10 (s, 1H), 8.09-8.06 (m, 1H), 6.63 (s, 1H), 6.16 (s, 0.3H), 6.01 (s, 0.7H), 5.20 (s, 0.3H), 4.95 (s, 0.7H), 4.67 (br s, 1H), 3.92-3.89 (m, 1H), 3.75 (s, 3H), 3.70-3.67 (m, 0.3H), 3.64-3.62 (m, 0.7H), 3.57 (s, 3H), 3.54 (s, 1H), 3.50 (s, 1H), 3.49-3.37 (m, 5H), 3.24-3.17 (m, 1H), 3.10-3.02 (m, 1H), 2.23 (s, 3H), 1.28 (d, J=6.5 Hz, 2H), 1.23 (d, J=6.5 Hz, 1H); MS (ESI−) m/z 772 (M−H); HPLC 96.7% (AUC), tR 10.53 min.

Workup

  1. filtrationThe reaction was filtered through
  2. filtrationa micro filter
  3. concentrationconcentrated
  4. customThe crude material was purified by preparative HPLC (10:90 acetonitrile/water to 60:40 acetonitrile/water with 0.05% TFA over 10 min
  5. customisocratic) to afford a dark red solid
  6. concentrationThe solution was concentrated
  7. customtriturated with diethyl ether

Sources & evidence

ORD record
ord-9a41e1c4a5284686b8c96fd1b15955f1
Source dataset
uspto-grants-2014_06
Patent number
US08754054B2

Reaction notes

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