1-Phenylpiperazine → HCID 69788670, compound

HRID 895854Notes

Reaction equation

[OH:1][C@H:2]1[CH2:23][CH2:22][C@@:21]2([CH3:24])[CH:4]([CH2:5][CH2:6][C:7]3[C:8]4[C@:17]([CH3:25])([CH2:18][CH2:19][C:20]=32)[C@@H:11]([C@@H:12]([CH3:16])[CH2:13][CH:14]=O)[CH2:10][CH:9]=4)[C:3]1([CH3:27])[CH3:26].[C:28]1([N:34]2[CH2:39][CH2:38][NH:37][CH2:36][CH2:35]2)[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>>[C:28]1([N:34]2[CH2:39][CH2:38][N:37]([CH2:14][CH2:13][C@@H:12]([C@@H:11]3[C@:17]4([CH3:25])[C:8]([C:7]5[CH2:6][CH2:5][C@@H:4]6[C@:21]([C:20]=5[CH2:19][CH2:18]4)([CH3:24])[CH2:22][CH2:23][C@H:2]([OH:1])[C:3]6([CH3:27])[CH3:26])=[CH:9][CH2:10]3)[CH3:16])[CH2:36][CH2:35]2)[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1

Participants

Reactant 3

HCID 70961-Phenylpiperazine

HCID 5049666Sodium triacetoxyborohydride

HCID 86586581HCID 86586581, compound

Product 1

HCID 69788670HCID 69788670, compound

Procedure

(20S)-3β-hydroxy-4,4,20-trimethyl-pregna-8,14-dien-21-carbaldehyde was treated with N-phenylpiperazin and sodium tris(acetoxy)borohydride as described in Example 9d). (20S)-20-[(4-phenylpiperazin-1-yl)ethyl]-4,4-dimethyl-5α-pregna-8,14-dien-3β-ol was isolated as a white solid.

Sources & evidence

ORD record: ord-27adf223405c48eab8fde806bacfddcb
Source dataset: uspto-grants-2005_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06916921B2

Reaction notes

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