178765-49-6Relevant articles and documents
Δ3 Asymmetric synthesis method -2 - hydroxyl psoralen and analogue compound
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, (2016/11/07)
The invention belongs to the field of chemical synthesis, provides a novel method for synthesizing delta3-2-hydroxybakuchiol and particularly relates to an asymmetric synthesis method for delta3-2-hydroxybakuchiol and analog compounds. The delta3-2-hydroxybakuchiol and the analog compounds, the general formula of which is (I), are synthesized by an asymmetric synthesis route. Problems in the prior art, that the content of the delta3-2-hydroxybakuchiol obtained by extraction and separation from plants is very low, an extraction rate is very low, the delta3-2-hydroxybakuchiol is prone to oxidative deterioration in extraction and separation processes, and the like, are overcome by the method. The method can provide sufficient samples for related pharmaceutical research, and provides good foundations for pharmaceutical research on antibiosis, infection resistance, oxidation resistance, pigment deposition resistance, reduction of bone loss, immunosuppression, liver damage, sedation and hypnosis, and the like. In the formula (I), R1 is selected from 4-hydroxy, 3-hydroxy, 2-hydroxy, hydrogen, 4-methyl, 4-methoxy, 4-trifluoromethyl, 3,4-[d][1,3]dioxole, and 3,4-phenyl; R2 is selected from methyl, ethyl, and butyl; and R3 is selected from vinyl, ethyl and cyclopropyl.
A facile asymmetric synthesis of Δ3-2-Hydroxybakuchiol, Bakuchiol and ent-Bakuchiol
Xu, Qian-Qian,Zhao, Qun,Shan, Guang-Sheng,Yang, Xi-Cheng,Shi, Qi-Yuan,Lei, Xinsheng
, p. 10739 - 10746 (2013/12/04)
A facile asymmetric synthesis of Δ3-2-Hydroxybakuchiol, Bakuchiol, and ent-Bakuchiol is described through one common intermediate bearing a chiral all-carbon quaternary carbon center, which involves stereoselectively unconjugated alkylation of the α,β-unsaturated imide bearing Evans' auxiliary, Takai-Utimoto reaction, Negishi reaction, and Heck reaction as key steps.
Synthesis of racemic Δ3-2-hydroxybakuchiol and its analogues
Shi, Lei,Lei, Xinsheng,Zhang, Jiange,Lin, Guoqiang
experimental part, p. 555 - 564 (2010/06/14)
The first synthetic approach to (±)-Δ3-2- hydroxybakuchiol (=4-[(1E,5E)-3-ethenyl-7-hydroxy-3,7-dimethylocta-1,5-dien-1- yl]phenol; 14) and its analogues 13a - 13f was developed by 12 steps (Schemes 2 and 3). The key features of the approach are the construction of the quaternary C-center bearing the ethenyl group by a Johnson - Claisen rearrangement (→6); and of an (E)-alkenyl iodide via a Takai - Utimoto reaction (→11); and an arylation via a Negishi cross-coupling reaction (→12e - 12f).