Formula: C34H22NO2P. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 5-(11bR)-Dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-yl-5H-dibenz[b,f]azepine, is researched, Molecular C34H22NO2P, CAS is 1265884-98-7, about Enantioselective Total Synthesis of (-)-Alstoscholarisine A. Author is Liang, Xiao; Jiang, Shi-Zhi; Wei, Kun; Yang, Yu-Rong.
We report a concise and highly enantioselective total synthesis of (-)-alstoscholarisine A (I), a recently isolated monoterpenoid indole alkaloid that has significant bioactivity in promoting adult neuronal stem cells proliferation. A highly enantioselective (99% ee), intramol. Ir-catalyzed Friedel-Crafts alkylation of indole II with a secondary allylic alc. was utilized to establish the first stereogenic center upon which the other three contiguous chiral centers were readily set by a highly stereoselective tandem 1,4-addition and aldol reaction. The key tetrahydropyran was constructed through a hemiacetal reduction, and the final aminal bridge was forged by a one-pot reductive amination/cyclization. The conciseness of this approach was highlighted by building core bonds in each step with a minimalist protecting group strategy.
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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem