From Rhododendron

Takahashi, H. et al., Triterpene and flavanone glycoside from Rhododendron simsii. Phytochemistry, 56, 875, 2001. 

Chosson, E. et al., Dihydroflavonol glycosides from Rhododendron ferrugineum. Phytochemistry, 49, 1431, 1998. 

Seventy different unifloral honey samples of specific botanical and geographical origins were analysed by an electronic nose. Fourteen samples from Robinia pseudoacacia L., 30 from Rhododendron spp. and 20 from Citrus spp. were of Italian origin, and six samples from Robinia pseudoacacia honey were of Hungarian origin. All samples were provided by the Istituto Nazionale di Apicoltura (Bologna, Italy) and their... 

Kalmia latfolia, Leucothoe grayana, L. spp., Rhododendron spp. (Ericaceae) in honey from Rhododendron-feeding bees... 

Kalmia latifolia, Leucothoe grayana, L. spp., Rhododendron spp. (Ericaceae) in honey from Rhododendron-feeding bees Tanacetum (Chrysanthemum) cinerariifolium (pyrethrum) (Asteraceae) Leopold Ruzicka (Croatia/Switzerland, Nobel Prize, 1939, Chemistry, polymethylenes terpenes) Tanacetum (Chrysanthemum) cinerariifolium (pyrethrum) (Asteraceae)... 

Ahmad VU, Ullah F, Hussain J, Farooq U, Zubair M (2004) Tyrosinase Inhibitors from Rhododendron collettianum and Their Structure-Activity Relationship (SAR) Studies. Chem Pharm Bull 52 1458... 

There are several cases of animal poisonings from Rhododendrons. Goats that ingested branches of an azalea plant presented with profuse vomiting, central nervous system depression, and fasciculations. Other animals with reported poisoning include donkeys, dogs, and kangaroos. 

Ahmad VU et al. (2004) Tyrosinase inhibitors from Rhododendron collettianum and their structure-activity relationship (SAR) studies. Chem Pharm Bull (Tokyo) 52(12) 1458-1461... 

Derived from rhododendron leaves. Open sodium channels act like batrachotoxin. Alleged to be one of the earliest known chemical warfare agents in the form of rhododendron honey given to Roman invaders. The intoxication by honey still occurs occasionally. Rarely fatal salivation, dizziness, weakness, excessive perspiration, nausea, vomiting low blood pressure or shock, heart abnormalities, paresthesia, loss of co-ordination, muscular weakness, convulsions. 

Wbod, H.B. etal. 1954. Andromedotoxin Apotent hypotensive agent from Rhododendron sTizsajmsm Journal of the American Chemical Society jC 5689-5692. 

Stereoisomers of hopane as the parent hydroearbon of about 100 naturally abundant hopane triterpenes are isolated in small amounts from oil slate and petroleum of various provenanee. Hydroxylated hopanes sueh as (-l-)-6a,22-hopanediol are found to oeeur in some liehens and, assoeiated with (-l-)-22(29)-hopen-6a,2ip-diol, in the roots of Iris missouriensis (Liliaeeae). Neohopanes exemplified by (-l-)-12-neo-hopen-3p-ol from Rhododendron linearifolium (Erieaeeae) rarely oeeur as natural produets. 

Klocke, j. a., M. Hu, S. Chiu, and I. Kubo, Grayanoid diterpene insect antifeedants and insecticides from Rhododendron molle. Phytochemistry, 30, 1797-1800 (1991). 

Toxic agent from Rhododendron, Kalmin, Leucothoe and Lyonia spp. Cryst. (EtOAc/pentane). Mp 267-270°. [a] -8.8° (c, 2.3 in EtOH). 

In one case poisoning from Rhododendron simsii occurred when a baby s grandmother prepared a decoction of this plant in milk [99 ]. Poisoning from eating rhododendrons has also been reported in animals such as sheep and goats [100 ]. 

Poisonous honey (pontius or insane honey) has been known since the time of the Greek historian and general, Xenophon, and the Roman writer, Plinius, It comes mostly from bees collecting their nectar from rhododendron species (Asia Minor, Caucasus Mountains) some plants of the... 

Akgul, M. and Camlibel, O. (2008) Manufacture of medium density fiberboard (MDF) panels from rhododendron (R. ponticum L.) biomass. Build. Environ., 43, 438-443. 

Nakamura, S., T. Yamada, H. Wada, Y. Inoue, T. Goto, and Y. Hirata The Structures of Five New Triterpenoids Obtained from Rhododendron linearifolium. Tetrahedron Letters 1965, 2017. 

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