Metal- and Oxidant-Free Modular Approach To Access N-Alkoxy Oxindoles via Aryne Annulation
摘要:
An unprecedented metal- and oxidant-free (intermolecular) approach to access N-alkoxy oxindoles via [3 + 2] cycloadition of in situ generated electrophilic species viz. aryne and (putative) aza-oxyallyl cation is reported. This approach is amenable to both C3-unsubstituted as well as C3-substituted oxindoles. A one-pot manipulation further makes this reaction highly practical. The versatility of this approach was demonstrated through valuable synthetic transformations.
NOVEL INDOLIC DERIVATIVES, THEIR PREPARATION PROCESSES AND THEIR USES IN PARTICULAR AS ANTIBACTERIALS
申请人:Denis Jean-Noel Marie Leon
公开号:US20100144726A1
公开(公告)日:2010-06-10
The invention relates to the use of at least one compound of the formula (I),
in which R and R
3
are particularly a hydrogen atom, R
1
is particularly a hydrogen atom or a methyl, ethyl or isobutyl mi group, R
4
, R
5
, R
6
and R
7
are independently a hydrogen atony, an alkoxyl group with 1 to 7 carbon atoms or a halogen atom, R
2
is a hydrogen atom, an O
−
group or an OH group, B is an N-GP
1
or NR
c
, group, GP
1
being a Boc or Cbz group, and R
c
is a hydrogen atom or a methyl or t-butyl group, for preparing a drug for treating conditions associated with bacterial infections, in particular for treating bacterial diseases.
The synthesis of pyrano[3,2-e]indoles and pryano[2,3-f]indoles as rotationally restricted phenolic analogs of the neurotransmitter serotonin
作者:John E. Macor、Kevin Ryan、Michael E. Newman
DOI:10.1016/s0040-4020(01)88200-4
日期:1992.1
The synthesis of two rotationally restricted phenolic analogs (1a and 1b) of the neurotransmitter serotonin have been accomplished. The syntheses of 8.9-dihydropyrano[3,2-e]indole (13a) and 7,8-dihydropyrano[2,3-f]indole (13b), which formed the template for these targets, are outlined. These novel fused-indoles represent rotationally restricted phenolic analogs of 5-hydroxyindole. The reaction sequence
Tyrosine-and tryptophan-containing peptides as antioxidants
申请人:——
公开号:US20030054976A1
公开(公告)日:2003-03-20
The invention relates to the use of tryptophan-containing, in particular tryptophan- and tyrosine-containing, peptides as antioxidants. The compounds can be used for the therapy or prophylaxis of syndromes and disorders associated with unwanted oxidative processes in the extracellular space.