geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Sesquiterpenes of thalloid liverworts of the genera Conocephalum, Lunularia, Metzgeria and Riccardia


, : Sesquiterpenes of thalloid liverworts of the genera Conocephalum, Lunularia, Metzgeria and Riccardia. Phytochemistry 16(11): 1727-1729

Thalloid liverworts of orders Metzgeriales and Marchantiales elaborate essential oils distinguishable from those of the Jungermanniales by the absence of -barbatene and anastreptene. Riccardia sinuata elaborates a novel tricyclic exomethylene sesquiterpene of as yet undetermined structure. Conocephalum conicum elaborates cadinene-type sesquiterpenes. -Cadinene from the latter species is clearly enantiomeric to the same product from vascular plants.

US$19.90

DOI: 10.1016/0031-9422(71)85080-x


Other references

Mu, L.; Sobotka, S.; Chen, J.; Su, H.; Sanders, I.; Nyirenda, T.; Adler, C.H.; Shill, H.A.; Caviness, J.N.; Samanta, J.E.; Sue, L.I.; Beach, T.G., 2013: Parkinson disease affects peripheral sensory nerves in the pharynx. Dysphagia is very common in patients with Parkinson disease (PD) and often leads to aspiration pneumonia, the most common cause of death in PD. Current therapies are largely ineffective for dysphagia. Because pharyngeal sensation normally triggers...

McCann, T.V.; Clark, E., 2008: Attitudes of patients towards mental health nurse prescribing of antipsychotic agents. We examined the attitudes of patients with schizophrenia towards unrestricted independent non-medical prescribing of antipsychotic agents by mental health nurses. Data were collected using the Factors Influencing Neuroleptic Medication Taking Scal...

Biradar N.V.; Bonde S.D., 1979: On a fossil palm peduncle from dongargaon district chanda maharashtra india. A silicified palm wood belonging to peduncle is described. The specimen was collected from Dongargaon, Maharashtra, India. It belongs to the Deccan Intertrappean Series of India [here, in the Eocene age]. The nature and typical orientation of the...

Weiss, G., 2001: Mountain forest policy in Austria: a historical policy analysis on regulating a natural resource. This paper looks at the role played by institutions in regulating mountain forests in 3 political-institutional eras (era of the commons, era of sovereignty, and era of the constitutional state) in Austria, using a policy analysis framework. The a...

Madrigal Sesma, M.J.; Martinez Fernandez, A.R., 1985: Detection of amoebae in indoor swimming pools. Examination of 48 samples of water from 6 indoor swimming pools in Madrid, Spain, collected in May and June 1981, revealed Acanthamoeba lenticulata in one sample. The isolate was non-pathogenic.

Kearney, R.T., 1994: Academic advisement and the RN-to-BSN student. Recognizing the advisement needs of registered nurse students pursuing a baccalaureate in nursing while managing employment, family, and academic obligations is important. The most useful academic advising functions identified were advice on requi...

Afifi, T.O.; Enns, M.W.; Cox, B.J.; Asmundson, G.J.G.; Stein, M.B.; Sareen, J., 2008: Population attributable fractions of psychiatric disorders and suicide ideation and attempts associated with adverse childhood experiences. Objectives. We sought to determine the fractions of psychiatric disorders and suicide ideation and attempts in a general population sample attributable to childhood physical abuse, sexual abuse, and witnessing domestic violence.Methods. Data were...

Bhatia, S., 1998: Drug abuse in adolescents in relation to their values and perceived family environment. International Journal of Adolescent Medicine and Health 10(1): 27-38

Jihwan Park; Youngsun Kong; Yunyoung Nam, 2017: A low-cost video-oculography system for vestibular function testing. In order to remain in focus during head movements, vestibular-ocular reflex causes eyes to move in the opposite direction to head movement. Disorders of vestibular system decrease vision, causing abnormal nystagmus and dizziness. To diagnose abnor...

Pronin, A.A., 1953: Namurian deposits of the western slopes of the Middle Urals. CR Acad Sci URSS NS: 90(6): 1123-1125