Paclitaxel → Baccatin Iii

HRID 1590327

反応式

C/C=C(/C(N[C@H]([C@@H](O)C([O:18][C@@H:19]1[C:40]([CH3:41])=[C:39]2[C:42]([CH3:44])([CH3:43])[C@:21]([OH:59])([C@@H:22]([O:50][C:51]([C:53]3[CH:54]=[CH:55][CH:56]=[CH:57][CH:58]=3)=[O:52])[C@@H:23]3[C@:28]4([O:31][C:32]([CH3:34])=[O:33])[CH2:29][O:30][C@@H:27]4[CH2:26][C@H:25]([OH:35])[C@@:24]3([CH3:49])[C:36]([C@@H:38]2[O:45][C:46]([CH3:48])=[O:47])=[O:37])[CH2:20]1)=O)C1C=CC=CC=1)=O)\C.CC1[C@@H](OC([C@H](O)[C@@H](NC(C2C=CC=CC=2)=O)C2C=CC=CC=2)=O)C[C@]2(O)C(C)(C)C=1[C@@H](OC(C)=O)C([C@@]1(C)[C@H]([C@@H]2OC(C2C=CC=CC=2)=O)[C@]2(OC(C)=O)CO[C@@H]2C[C@@H]1O)=O>>[CH3:41][C:40]1[C@@H:19]([OH:18])[CH2:20][C@:21]2([OH:59])[C:42]([CH3:43])([CH3:44])[C:39]=1[C@@H:38]([O:45][C:46]([CH3:48])=[O:47])[C:36]([C@@:24]1([CH3:49])[C@H:23]([C@@H:22]2[O:50][C:51]([C:53]2[CH:54]=[CH:55][CH:56]=[CH:57][CH:58]=2)=[O:52])[C@:28]2([O:31][C:32]([CH3:34])=[O:33])[CH2:29][O:30][C@@H:27]2[CH2:26][C@@H:25]1[OH:35])=[O:37]

参加物

反応物 2

HCID 36314Paclitaxel

HCID 6436208Cephalomannine

生成物 1

HCID 65366Baccatin Iii

実験手順

In the third embodiment, the addition of 10% tin chloride (based on the taxol in the starting material) to tetrabutylammonium borohydride in dichloromethane at 0° C. for one hour resulted in a 121.7% yield of Baccatin III. It would appear material other then just the cephalomannine and taxol in the starting material was cleaved to produce Baccatin III. It is hypothesized that certain taxol compounds may be bound to sugars and other biological material and that these may have been converted to Baccatin III in this process.

出典と根拠

ORDレコード: ord-f981d4a919ec4c9b9365aa86304ae260
出典データセット: uspto-grants-1993_04
DOI: 10.6084/m9.figshare.5104873.v1
特許番号: US05202448

反応式

参加物

反応物 2

生成物 1

実験手順

出典と根拠

関連ノート