The first synthesis of isochromene fused carbazols, (4aS, 13bR)-2,5,5-trimethyl-3,4,4a,5,8,13b-hexahydroisochromeno[3,4-b]carbazole (2) and its epi-isomer 3 by condensation of citral and 2-hydroxycarbazole using Ti(OEt)4 and MeAlCl2 as catalysts is described.
ItoC, NakagawaM, WuTS, FurukawaH. (1991) New carbazle alkaloids from Murraya euchrestifolia. Chemical & Pharmaceutical Bulletin, 39, 1668–1671
2.
MandalS, NayakA, BanerjeeSK, BanerjiJ, BanerjiA. (2008) A new carbazole alkaloid from Murraya koenigii Spreng (Rutaceae). Natural Product Communications, 3, 1679–1682
3.
ChakrabortyM, SahaS, MukhapadhyayS. (2009) Murrayakoeninol- a new carbazole alkaloid from Murraya koenigii (Linn) Spreng. Natural Product Communications, 4, 355–358.
4.
CuongNM, HungTQ, SungTV, TaylorWC. (2004) A new dimeric carbazole alkaloid from Glycosmis stenocarpa roots. Chemical & Pharmaceutical Bulletin, 52, 1175–1178.
5.
TranTHA, NguyenTT, MichelS, TillequinF, KochM, PfeifferB, PierreA, TrinhVDH. (2004) Synthesis and cytotoxic activity of pyranocarbazole analogues of ellipticine and acronycine. Chemical & Pharmaceutical Bulletin, 52, 540–545.
6.
NakaharaK, TrakoontivakornG, AlzorekyNS, OnoH, Onishi-KameyamaM, YoshidaM. (2002) Antimutagenicity of some edible Thai plants and a bioactive carbazole alkaloid, Mahanine, isolated from Micromelum minutum. Journal of Agricultural and Food Chemistry, 50, 4796–4802.
7.
KureelSP, KapilRS, PopliSP. (1969) The synthesis of (±)-mahanimbine and bicyclomahanimbine. Chemical Communications, 1120–1121.
8.
NarasimhanNS, ParadkarMV, GokhaleAM. (1970) Synthesis of girinimbine and (±)mahanimbine. Tetrahedron Letters, 19, 1665–1668.
PatelBPJ. (1982) Citral condensation: towards the synthesis of mahanimbine isomers. Indian Journal of Chemistry, 21B, 612–616.
11.
OliveiraMM, CarvalhoLM, MoustrouC, SamatA, GuglielmettiR, Oliveira-CamposAMF. (2001) Synthesis and photochromic behaviour of novel 2H-1-benzopyrans (=2H-chromenes) derived from carbazololes. Helvetica Chimica Acta, 84, 1163–1171.
12.
PozzoJL, SamatA, GuglielmettiR, DubestR, AubardJ. (1997) Synthesic and photochromic behaviour of naphthopyrans, pyranoquinolines, pyranoquinazolines and pyranoquinoxalines. Helvetica Chimica Acta, 80, 725–738.
13.
PozzoJL, LokshinVA, GuglielmettiR. (1994) A convenient synthesis of azolo-fused 2H-[1]benzopyrans. Journal of the Chemical Society Perkin Transactions I, 2591–2595.
14.
PozzoJL, SamatA, GuglielmettiR, LokshinV, MinkinV. (1996) Furo-fused 2H-chromenes: synthesis and photochromic properties. Canadian Journal of Chemistry, 76, 1649–1659.