4397-16-4Relevant academic research and scientific papers
Deconjugative α-Alkylation of Cyclohexenecarboxaldehydes: An Access to Diverse Terpenoids
Chahboun, Rachid,Botubol-Ares, José Manuel,Durán-Pe?a, María Jesús,Jiménez, Fermín,Alvarez-Manzaneda, Ramón,Alvarez-Manzaneda, Enrique
, p. 8742 - 8754 (2021/07/19)
A general and efficient method for the deconjugative α-alkylation of α,β-unsaturated aldehydes promoted by a synergistic effect between tBuOK and NaH, which considerably increases the reaction rate under mild conditions, is reported. The β,γ-unsaturated aldehyde, resulting from the α-alkylation, is transformed in high yield into the corresponding allyl acetate via a lead(IV) acetate-mediated oxidative fragmentation. This strategy could be used for the construction of the carbon skeleton of a wide variety of alkyl or arylterpenoids.
Asymmetric induction via short-lived chiral enolates with a chiral C-O axis
Yoshimura, Tomoyuki,Tomohara, Keisuke,Kawabata, Takeo
supporting information, p. 7102 - 7105 (2013/06/27)
A novel method has been developed for the asymmetric cyclization of alkyl aryl ethers. The reactions were assumed to proceed via short-lived chiral enolate intermediates with a chiral C-O axis to give cyclic ethers with tetrasubstituted carbon in up to 99% ee. The half-life of racemization of the chiral enolate intermediate was roughly estimated to be ~1 s at -78 C.
PHOSPHONIC ACID DERIVATES AND THEIR USE AS P2Y12 RECEPTOR ANTAGONISTS
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Page/Page column 140, (2009/07/03)
The invention relates to 2-phenyl-pyrimidine derivatives containing a phosphonic acid motif and their use as P2Y12 receptor antagonists in the treatment and/or prevention of peripheral vascular, of visceral-, hepatic- and renal-vascular, of cardiovascular and of cerebrovascular diseases or conditions associated with platelet aggregation, including thrombosis in humans and other mammals. (I).
Investigation of Mn(III)-based oxidative free radical cyclization reactions toward the synthesis of triptolide: The effects of lanthanide triflates and substituents on stereoselectivity
Yang, Dan,Ye, Xiang-Yang,Xu, Ming,Pang, Kwan-Wah,Cheung, Kung-Kai
, p. 1658 - 1663 (2007/10/03)
Mn(III)-mediated oxidative free radical cyclization reactions are useful for construction of polycyclic compounds. In the total synthesis of triptolide (3) and its related compounds, construction of tricyclic skeletons 4 and 5 was achieved by the Mn(OAc)
