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This work was the first investigation of the essential oil composition of Goniothalamus tortilipetalus M.R.Hend. The aim of this study is to investigate the essential oil composition extracted from different parts of Goniothalamus tortilipetalus M.R.Hend., including flowers, leaves, and twigs, and to evaluate their antioxidant and antibacterial activities. The Clevenger apparatus was used for hydrodistillation to prepare the essential oils. The essential oils were investigated using gas chromatography–mass spectrometry (GC-MS). The three major compounds of the flowers were bicyclogermacrene (15.81%), selin-11-en-4-α-ol (14.68%), and E-caryophyllene (7.02%), whereas the leaves were p-cymene (39.57%), ascaridole (9.39%), and α-copaene (9.12%). In the case of the twigs, α-copaene (10.34%), selin-11-en-4-α-ol (8.85%), and p-cymene (7.76%) were the major compounds. The flower essential oil showed antioxidant activities with IC50 values of 725.21 µg/mL and 123.06 µg/mL for DPPH and ABTS assays, respectively. The flower essential oil also displayed antibacterial activity against Bacillus subtilis, Staphylococcus aureus, Micrococcus luteus, Salmonella typhimurium, and Shigella flexneri, with the same MIC value of 640 µg/mL.

Abstract Background Young Thai women are growing up amidst conflicting influences of globalization and traditional Thai culture. They experience confusion about which aspects of their sexuality they can express and must hide. This study examined forms of sexual control and sexual negotiation among young Thai women in secondary and vocational schools. Methods Semi-structured interviews and focus group discussions were conducted among 13-to 18-year-old female students attending secondary and vocational schools in six regions of Thailand. Additional semi-structured interviews were conducted with instructors of sex education, school administrators, and parents of students. NVIVO 10 was used to manage, code and assist with data analysis. Results Socio-cultural control on young women’s sexualities was found from members of their families, schools, communities, and other students. Young women expressing their sexualities openly through verbal expressions, clothing, and behaviors were deemed negatively and stigmatized as dekkaedaet or “kids pretending to be grownups” as it is believed that they are too young and too immature to be responsible for their own decisions on their bodies and sexuality. This dominant discourse subsequently stigmatize and embarrass sexually active women. However, some young women try to negotiate and create options, by utilizing strategies that ensure secrecy. Conclusion Comprehensive sexuality education is needed and should be based on the respect for human dignity and sexual and reproductive rights.

The phytochemical investigation of Uvaria cordata (Dunal) Alston resulted in the isolation and identification of eight cyclohexene derivatives (1 – 8) and a tetrahydroxanthene-1,3(2 H)-dione (9). Among them, compounds 1 and 2 were previously undescribed compounds, and their structures were characterized by intensive spectroscopic data and HRESITOFMS. Compound 7 ((+)-(5 S)-grandiuvarone) exhibited NO production inhibitory with an IC 50 value of 34.1 μM, which was better than the standard compound, indomethacin (IC 50 = 51.3 μM). [Display omitted] • Nine compounds were isolated from Uvaria cordata fruits. • Two previously undescribed cyclohexenes derivatives were isolated. • (+)-(5 S)-grandiuvarone showed NO production inhibitory with an IC 50 value of 34.1 µM. [ABSTRACT FROM AUTHOR]

Background The purpose of this nationwide study was to assess implementation of comprehensive sexuality education (CSE) in Thai public secondary schools, with a view to reveal its strengths and weaknesses.Methods: This was a mixed-methods study using a cross-sectional survey of 8837 students and 692 teachers at 398 public secondary schools, selected by multistage cluster sampling from six regions of Thailand, along with participatory focus group discussions with 150 students, and semi-structured in-depth interviews with 30 students and 70 teachers.Results: Sexuality education was provided in most schools, but its implementation was incomprehensive and inconsistent across different types of schools. Topics covered were broad, but emphasis was primarily on biology and negative consequences of sex, in particular preventing adolescent pregnancy. Topics related to human rights, gender equality, and sexual and gender diversity were not addressed sufficiently. Pedagogy was found to be heavily lecture-based, while class environment was not comfortable for many students.Conclusion: Gaps recognised in this study reflect the challenges of providing sexuality education in school settings where society's political and sociocultural norms are imposed and traditional pedagogical ways have remained dominant. Strategies are needed to address implementation shortcomings to make sexuality education more comprehensive in Thailand. [ABSTRACT FROM AUTHOR]

Phytochemical investigations of the twig and leaf extracts of Uvaria dac Pierre ex Finet & Gagnep. resulted in the isolation and identification of five new highly oxygenated cyclohexenes, uvaridacols M - Q (1-3, 5, and 6), and six known compounds (4 and 7-11). All new structures were elucidated by spectroscopic methods and HRESITOFMS data. The absolute configuration of 1, 5, and 6 was confirmed by single X-ray diffraction analysis with Cu Kα radiation. In contrast, other compounds were established by comparing their specific rotation and ECD spectra with those of known compounds. Some of the isolated compounds with sufficient quantity were evaluated for their α-glucosidase inhibitory activity. Of these, (-)-1,6-desoxypipoxide (10) showed α-glucosidase inhibitory activity with an IC 50 value of 28.6 μM. The in silico molecular docking of active compounds was also studied., Competing Interests: Declaration of competing interest The authors declare no competing financial interest., (Copyright © 2024 Elsevier B.V. All rights reserved.)

The first phytochemical investigation of the twig extract of Uvaria leptopoda resulted in the isolation and identification of three new tetrahydroxanthene-1,3(2 H )-diones, uvarialeptones A-C, two new oxidized hexadiene derivatives, uvarialeptols A and B, together with ten known compounds. Their structures were elucidated by spectroscopic techniques and mass spectrometry. Uvarialeptones A and B were unprecedented tetrahydroxanthene-1,3(2 H )-dione dimers which exhibited a cyclobutane ring via [2 + 2] cycloaddition from uvarialeptone C and 9a- O -methyloxymitrone, respectively. The structure of uvarialeptone A was confirmed by X-ray diffraction analysis using Mo Kα radiation. Compound 3 inhibited NO production at an IC 50 value of 6.7 ± 0.1 μM.

Three previously undescribed aporphine alkaloids, phaeanthuslucidines E-G, one previously undescribed naphthoquinone derivative, phaeanthusnaphthoquinone, and three known compounds were isolated from an EtOAc extract of the leaves of Phaeanthus lucidus Oliv. The structures of all previously undescribed compounds were established through extensive spectroscopic investigations and high-resolution mass spectroscopy. The 6aR configuration of phaeanthuslucidines E-G was assigned by comparing their ECD spectra and specific rotation values with the reported known compounds. Some isolated compounds were evaluated for their α-glucosidase inhibitory activity. Among these compounds, phaeanthuslucidine E showed the highest α-glucosidase inhibitory activity with an IC 50 value of 17.9 ± 0.4 μM. The molecular docking of phaeanthuslucidine E was further studied., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Surat Laphookhieo reports financial support was provided by National Research Council of Thailand. Surat Laphookhieo reports a relationship with National Research Council of Thailand that includes: funding grants and travel reimbursement. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Ltd. All rights reserved.)